LICENSE and README updates (#254)

* LICENSE and README updates

* Remove duplicated definition

* Remove duplicated file

packages/trie-db/src/constants.ts

@@ -1,6 +1,6 @@
 // Copyright 2017-2018 @polkadot/trie-db authors & contributors
 // This software may be modified and distributed under the terms
-// of the ISC license. See the LICENSE file for details.
+// of the Apache-2.0 license. See the LICENSE file for details.
 
 import { keccakAsU8a as hashing } from '@polkadot/util-crypto/index';
 import trieRoot from '@polkadot/trie-hash/root';

packages/trie-db/src/ethereum.spec.js

@@ -1,6 +1,6 @@
 // Copyright 2017-2018 @polkadot/trie-db authors & contributors
 // This software may be modified and distributed under the terms
-// of the ISC license. See the LICENSE file for details.
+// of the Apache-2.0 license. See the LICENSE file for details.
 
 import toU8a from '@polkadot/util/u8a/toU8a';
 import u8aToHex from '@polkadot/util/u8a/toHex';

packages/trie-db/src/index.spec.js

@@ -1,6 +1,6 @@
 // Copyright 2017-2018 @polkadot/trie-db authors & contributors
 // This software may be modified and distributed under the terms
-// of the ISC license. See the LICENSE file for details.
+// of the Apache-2.0 license. See the LICENSE file for details.
 
 import u8aToHex from '@polkadot/util/u8a/toHex';
 import toU8a from '@polkadot/util/u8a/toU8a';

packages/trie-db/src/index.ts

@@ -1,6 +1,6 @@
 // Copyright 2017-2018 @polkadot/trie-db authors & contributors
 // This software may be modified and distributed under the terms
-// of the ISC license. See the LICENSE file for details.
+// of the Apache-2.0 license. See the LICENSE file for details.
 
 import { TxDb, ProgressCb } from '@polkadot/db/types';
 import { TrieDb, Node, NodeBranch, NodeEncodedOrEmpty, NodeKv, NodeNotEmpty, NodeType } from './types';

packages/trie-db/src/snapshot.spec.js

@@ -1,6 +1,6 @@
 // Copyright 2017-2018 @polkadot/trie-db authors & contributors
 // This software may be modified and distributed under the terms
-// of the ISC license. See the LICENSE file for details.
+// of the Apache-2.0 license. See the LICENSE file for details.
 
 import toU8a from '@polkadot/util/u8a/toU8a';
 

packages/trie-db/src/types.ts

@@ -1,6 +1,6 @@
 // Copyright 2017-2018 @polkadot/trie-db authors & contributors
 // This software may be modified and distributed under the terms
-// of the ISC license. See the LICENSE file for details.
+// of the Apache-2.0 license. See the LICENSE file for details.
 
 import { TxDb, ProgressCb } from '@polkadot/db/types';
 

packages/trie-db/src/util/is.ts

@@ -1,6 +1,6 @@
 // Copyright 2017-2018 @polkadot/trie-db authors & contributors
 // This software may be modified and distributed under the terms
-// of the ISC license. See the LICENSE file for details.
+// of the Apache-2.0 license. See the LICENSE file for details.
 
 import { Node, NodeBranch, NodeKv, NodeEmpty, NodeType } from '../types';
 

packages/trie-db/src/util/key.ts

@@ -1,6 +1,6 @@
 // Copyright 2017-2018 @polkadot/trie-db authors & contributors
 // This software may be modified and distributed under the terms
-// of the ISC license. See the LICENSE file for details.
+// of the Apache-2.0 license. See the LICENSE file for details.
 
 import { isNull } from '@polkadot/util/index';
 

packages/trie-db/src/util/nibbles.ts

@@ -1,6 +1,6 @@
 // Copyright 2017-2018 @polkadot/trie-db authors & contributors
 // This software may be modified and distributed under the terms
-// of the ISC license. See the LICENSE file for details.
+// of the Apache-2.0 license. See the LICENSE file for details.
 
 import { NodeEncodedOrEmpty, NodeEncoded } from '../types';
 

packages/trie-db/src/util/node.ts

@@ -1,6 +1,6 @@
 // Copyright 2017-2018 @polkadot/trie-db authors & contributors
 // This software may be modified and distributed under the terms
-// of the ISC license. See the LICENSE file for details.
+// of the Apache-2.0 license. See the LICENSE file for details.
 
 import { Node, NodeType, NodeNotEmpty } from '../types';