Merge pull request #5 from DWiechert/master

Fixed link to packages site.
CONTRIBUTING.md - this is how you contribute to Splitting Atoms
Adding the theme guides directory referenced in CONTRIBUTING.md
Referencing CONTRIBUTING.md in the README.
Merge pull request #6 from jbranchaud/contributing-file

Adding CONTRIBUTING.md per GitHub convention
add minor formatting, and options for apm install
add 2 new command descriptions
Merge pull request #8 from karan/master

add minor formatting, and options for apm install
don't need help params
add more command references
complete command reference
Merge pull request #9 from karan/master

Complete apm command reference
A guide on defining commands in init.coffee to improve your workflow.
Merge pull request #10 from jbranchaud/init-file-guide

A guide on defining commands in init.coffee to improve your workflow.
node_components is actually node_modules
Fixing some wording.
Merge pull request #11 from EvanHahn/patch-1

node_components is actually node_modules
Merge pull request #12 from jbranchaud/fix-wording

Fixing some wording.
Package Basics guide
Merge pull request #13 from kenwheeler/master

Package Basics guide