Vagrant setup now uses Go 1.7

vagrant_setup.sh

@@ -4,13 +4,13 @@
 add-apt-repository ppa:git-core/ppa -y
 echo "Updating..."
 apt-get update
-apt-get install -y curl git bison make mercurial sqlite3
+apt-get install -y curl git bison make mercurial
 
 # Golang
 bash < <(curl -s -S -L https://raw.githubusercontent.com/moovweb/gvm/master/binscripts/gvm-installer)
 source ~/.gvm/scripts/gvm
-gvm install go1.4
-gvm use go1.4
+gvm install go1.7
+gvm use go1.7
 
 # Rqlite
 mkdir -p rqlite