Wiki describing how to add transaction (#152)

* quick wiki describing how to add transactions

* added token paramters value

Author: aalavandhan

docs/Orchestrator.md

@@ -0,0 +1,34 @@
+### Adding transactions
+
+1) Use the truffle console to encode the function call as follows.
+
+```
+# Sync tx
+web3.eth.abi.encodeFunctionCall({
+  name: 'sync',
+  type: 'function',
+  inputs: [],
+}, []);
+
+
+# Gulp tx
+web3.eth.abi.encodeFunctionCall({
+  name: 'gulp',
+  type: 'function',
+  inputs: [{
+      type: 'address',
+      name: 'token'
+  }],
+}, ['0xD46bA6D942050d489DBd938a2C909A5d5039A161']);
+```
+
+2) Admin invokes `addTransaction` with the destination contract address and `bytes`
+as encoded from step 1.
+
+### Current list of transactions
+
+1. UniswapV2 (AMPL-DAI): sync() => `0x08a564924C26D8289503bbaA18714B9C366dF9a5`: `0xfff6cae9`
+2. UniswapV2 (AMPL-ETH): sync() => `0xc5be99A02C6857f9Eac67BbCE58DF5572498F40c`: `0xfff6cae9`
+3. Balancer Bpool (AMPL-ETH): gulp('0xD46bA6D942050d489DBd938a2C909A5d5039A161') => `0xeefb11cA05c6F0d5252757Dbe35fFC4458108e89`: `0x8c28cbe8000000000000000000000000d46ba6d942050d489dbd938a2c909a5d5039a161`
+
+