Merge pull request #802 from yemel/feature/missing-docs

Add ECIES and JSON RPC docs

docs/helpers/ECIES.md

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+# > `bitcore-ecies`
+
+## Description
+
+Bitcore implements [Elliptic Curve Integrated Encryption Scheme (ECIES)](http://en.wikipedia.org/wiki/Integrated_Encryption_Scheme), which is a public key encryption system that performs bulk encryption on data usinc a symmetric cipher and a random key.
+
+For more information refer to the [bitcore-ecies](https://github.com/bitpay/bitcore-ecies) github repo.
+
+## Instalation
+
+ECIES is implemented as a separate module and you must add it to your dependencies:
+
+For node projects:
+```
+npm install bitcore-ecies --save
+```
+
+For client-side projects:
+```
+bower install bitcore-ecies --save
+```
+
+## Example
+
+```
+var bitcore = require('bitcore');
+var ECIES = require('bitcore-ecies');
+
+var alicePrivateKey = new bitcore.PrivateKey();
+var bobPrivateKey = new bitcore.PrivateKey();
+
+var data = new Buffer('The is a raw data example');
+
+// Encrypt data
+var cypher1 = ECIES.privateKey(alicePrivateKey).publicKey(bobPrivateKey.publicKey);
+var encrypted = cypher.encrypt(data);
+
+// Decrypt data
+var cypher2 = ECIES.privateKey(bobPrivateKey).publicKey(alicePrivateKey.publicKey);
+var decrypted = cypher.decrypt(encrypted);
+
+assert(data.toString(), decrypted.toString());
+```

docs/networking/JSONRPC.md

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+# > `bitcore.transport.RPC`
+
+## Description
+
+Bitcoind provides a direct interface to the bitcoin network and it also exposes a `JSON-RPC` API. This class allows to connect to a local instance of a bitcoind server and make simple or batch RPC calls to it.
+
+## Connection to bitcoind
+
+First you will need a running instance of bitcoind, setting up a username and password to connect with it. For more information about running bitcoind please refer to the [official documentation](https://en.bitcoin.it/wiki/Running_Bitcoin).
+
+The code for creating and configuring an instance of the RPC client looks like this:
+
+```
+var bitcore = require('bitcore');
+var RPC = bitcore.transport.RPC;
+
+var client = new RPC('username', 'password', {
+  host: 'localhost',
+  port: 18332,
+  secure: false,
+  disableAgent: true,
+  rejectUnauthorized: true
+});
+```
+
+
+## Examples
+
+For more information please refer to the [API reference](https://en.bitcoin.it/wiki/API_reference_%28JSON-RPC%29).
+
+```
+var bitcore = require('bitcore');
+var blockHash = '0000000000000000045d581af7fa3b6110266ece8131424d95bf490af828be1c';
+
+var client = new bitcore.transport.RPC('username', 'password');
+
+client.getBlock(blockHash, function(err, block) {
+  // do something with the block
+});
+
+```