Gcoin v1.1.2

Gcoin Core version 1.1.2 released
29 June 2016

How to Upgrade :
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then download new version, build and install it, and restart Gcoin core again.

Notable Changes:

1. Travis CI #42
2. Gcoin naming #37
   You must use "gcoind" instead of "bitcoind -gcoin" to start Gcoin core,
   and use "gcoin-cli" instead of "bitcoin-cli -gcoin" to call rpc after this version