note deps and provide scrpit to install them

.gitignore

@@ -1,2 +1,2 @@
-pinboard-backup-matthew.sh
-pinboard-backup-matthew
+/.bundle/
+/vendor/gems

Gemfile

@@ -0,0 +1,3 @@
+source 'https://rubygems.org'
+
+gem 'octokit'

README.md

@@ -4,10 +4,10 @@ This is a package of git- and github-training scripts into an easily-installed p
 
 ## Installation
 
-If you have Ruby installed, you can install these scripts into a directory in your path by running:
+If you have Ruby >= 1.9 installed, you can install these scripts into a directory in your `$PATH` by running:
 
 ```
-$ rake
+$ script/bootstrap
 ```
 
 ## Usage

script/bootstrap

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# resolves all dependencies that the application requires to run
+
+set -e
+
+cd "$(dirname "$0")/.."
+
+# make sure bundler installed
+which bundler 2>&1 >/dev/null || gem install bundler
+
+# make sure needed gems installed
+bundle check --path vendor/gems 2>&1 >/dev/null || bundle install --path vendor/gems --quiet
+
+# install scripts
+rake