Quickly the github PR review page from the current branch

git-pr.sh

#!/bin/bash
# Running with no arguments opens against release,
# but pass one argument to open against that branch:
# $ git-pr master
# $ git-pr

MAIN_BRANCH='release'
if [ -n "$1" ]; then
    MAIN_BRANCH=$1
fi
CURRENT_BRANCH=`git branch 2>/dev/null | grep '*' | sed 's/* \(.*\)/\1/'`
URL=`git remote -v 2> /dev/null | grep '(push)' | awk '{print $2}'`
if [ -n "$URL" ]; then
    URL="$URL/compare/$MAIN_BRANCH...$CURRENT_BRANCH"
    open $URL
fi