Added detection of locally built git

dotfiles/git-universe/setup

 #!/bin/bash
 
-gitver=`git --version | cut -d ' ' -f 3`
+git_binary=`which git`
 
+if [[ -x $HOME/bin/git ]]; then
+    git_binary=$HOME/bin/git
+fi
+
+gitver=`$git_binary --version | cut -d ' ' -f 3`
 if [[ "$gitver" > "1.8" ]]; then
     tilde='~'
 else