Updated main.go - fix for broken develop build 

Transaction execution fixes - 60cdb1148c404218846fd39331690658168f4e04
Updated install.sh - github paths for executables
fix for install script devel
changed install.sh to change branch and install executable
go get dependencies on executable
go get deps doesnt work with develop branch
Merge pull request #187 from honestmoney/develop

Fix for broken develop build and install.sh