Add a newline to the end of file.

This makes appending new options cleaner.
Merge pull request #356 from whatthejeff/patch-1

Add a newline to the end of file.
Updating `nvm` to v0.13.1.

This includes a zsh fix, as well as the `nvm exec` command.
Merge pull request #357 from ljharb/update_to_nvm_0_13_1

Updating `nvm` to v0.13.1
Update Firefox to 31.0esr
Update change log [skip ci]
Added android-ndk cookbook
remove sysctl from travis_build_env
WIP
remove iptables
Disable shared_buffers
added smallfiles to mongodb configuration