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
p2p: rework protocol API
p2p: fix issues found during review
p2p: disable failing Server tests for now
p2p: API cleanup and PoC 7 compatibility

Whoa, one more big commit. I didn't manage to untangle the
changes while working towards compatibility.
rlp: add Stream.Reset and accept any reader (for p2p)
rlp: add NewListStream (for p2p)
p2p: use package rlp
p2p: use package rlp for baseProtocol
rlp: include target type in decoder error messages
p2p: remove Msg.Value and MsgLoop
p2p: make Disconnect not hang for peers created with NewPeer
p2p: add test for NewPeer
GasData changes & removed min gas price