* docs: Relates to #193. Generate Methods in API docs to Substrate Interfaces Extrinsics and Storage from Metadata
* Steps to generate Gitbook:
```
yarn run build:methodsdoc;
yarn run build;
yarn gitbook serve;
```
* Allows generating a docs/METHODS_STORAGE.md and docs/METHODS_EXTRINSICS.md files by running `yarn run build:methodsdoc`
* Note: The script runs `node packages/types/src/MetadataMdWrapper.js`, which uses Babel.js to transpile the TypeScript file MetadataMd.ts into JavaScript as MetadataMd.js by using the babel-plugin-module-resolver dependency that has been added to package.json. It runs MetadataMd.js, which parses a hard-coded copy of a Metadata response from the Substrate Node, and then generates the two aforementioned Markdown files to be included in the Gitbook.
* Important Note: DO NOT run `./node_modules/.bin/tsc packages/types/src/MetadataMd.ts; node packages/types/src/MetadataMd.js;`, as doing so may incorrectly transpile other TypeScript files, and will give errors like `TypeError: bn_js_1.default is not a constructor` when you run your unit tests.
* Added links that work when you go to http://localhost:4000/api/ and click the "api" link on the side menu
* Note: This was achieved by first adding the links in packages/api/README.md (i.e. `[Extrinsics (Substrate Interface)](../METHODS_EXTRINSICS.md)`). Note that the links could also be `METHODS_EXTRINSICS.html` and it would still work. It is VERY important to add links to these Markdown files in docs/SUMMARY.md (i.e. `[Storage](METHODS_STORAGE.md)`), as Gitbook generates HTML files in the same docs/ directory (i.e. it generates docs/METHODS_STORAGE.html) for any links provided in that file, and when you run `yarn run build; yarn gitbook serve` it will put a copy of those HTML files in the _book directory so it can be accessed in the browser.
* Replaces PR #249 and #255 from jg-meta-md from jg-meta-md-luke branches
* feat: Add script to generate decoded JSON file of the Metadata. Remove test.
* Summary:
* Running `yarn run build:decodedjson` will generate packages/types/src/Metadata.decoded.json from the Metadata in the Metadata.rpc.ts file.
* docs: Manually add RPC Substrate Interface API docs including author, chain, state, system
* docs: Append Storage Substrate methods to Storage Methods. Add consistent styling. Add descriptions
* Add Description at top of Substrate Interface page for RPC, Extrinsics, and Storage in API docs
* Add styling to Substrate Interface page for Extrinsics and Storage, including:
* ▸ symbol before each method
* bold method names
* adding Summary label and only showing the summary label if a summary exists
* adding a horizonal line between each section of methods
* Fix by adding new line after description when there is one in Extrinscis and Storage
* Manually creating a markdown file containing storage.substrate methods METHODS_STORAGE_SUBSTRATE.md, and then reading from the file and appending it to the bottom of the METHODS_STORAGE.md file that is generated, since the storage.substrate methods are not available from the Metadata.
* Fix by reading and writing to file using UTF8 instead of ASCII so symbols appear correctly
* Updating docs/METHODS_RPC.md and adding a horizontal line before the first section of methods
* docs: Fix Readme file step numbering
* docs: Generate the Substrate Interface Markdown files first when run yarn run build
* refactor: Move babel register config into shared file
* refactor: Use shared function to overcome codeclimate error
* fix: Reword description of RPC methodsto address review comment
* docs: Rename to Runtime Node Interfaces to address review comment
* docs: Rename to Runtime Node Interface in api Readme to address review comment
* docs: Fix minor typos
* docs: Fixes#117 providing Readme ref to jsonrpc docs
* fix: Remove preceding whitespace
* docs: Rename so RPC is not referred to as an interface of the runtime
* docs: Refer to Storage Substrate methods as always available to runtime implementation
* test: Restore the test that was unnecessary deleted
* Move scripts into packages/types/src/scripts
* docs: Add script to generate RPC interface docs
* fix: Fix TSlint error where element had any time due to no index signature
* refactor: Restore code back to normal instead of bowing to codeclimate whims
* refactor: Declare meaningful variables to make more readable
* docs: Show .subscribe when it is isSubscription method
* fix: Remove docs/api since replaced with docs/rpc-core
* fix: Remove docs/api-provider since replaced with docs/rpc-provider
* fix: Remove docs/api-rx since replaced with docs/rpc-rx
* fix: Remove the guide file that serves no purpose
* fix: Change license from ui-observable to api-observable
* fix: Remove disused mockHttp and mockWs that are duplicates of those in rpc-provider
* fix: Clarifies difference between PropIndex and ProposalIndex from Issue #226
* fix: Update api-observable Readme to refer to rpc-core, previously called api
* misc: Update Readme of rpc-core. See commit message details.
* Update name to be @polkadot/rpc-core instead of @polkadot/api
* Use Yarn instead of NPM for instructions adding dependencies
* Refer to @polkadot/rpc-core as `Rpc`
* Highlight that given block header hash should be a 0x-prefixed hex string with length of 64 (not only length of 10 as shown in the example)
* Showcase more information that you can obtain from the header object (i.e. best block number, parentHash, stateRoot, extrinsicsRoot, and digest)
* Use `header.raw` instead of just `header` to access properties of the header object
* Update the example to console.log the subscription ID
* Add missing semicolon
* fix: Fix name in license header and rename Api to Rpc for rpc-core e2e tests
* fix: Update rpc-provider Readme to use Yarn instead of NPM install
* fix: Fix minor typo
* fix: Rename Api to Rpc for rpc-provider ws
* fix: Refer to rpc-core instead of api in the rpc-rx Readme
* fix: Update rpc-rx files to refer to it as RpcRx instead of RxApi or just Api
* fix: Refer to rpc-core as Rpc instead of Api
* fix: Update type-jsonrpc Readme. Fix typo. Use Yarn not NPM. Refer to TSLint not Flow
* refactor: Move non-type dependency import with non-type dependencies
* docs: Add link to parity-codec repo
* fix: Avoid use of .raw. Fix listen to blocks example
* fix: Add missing error to newHead in listen to blocks example
