.osx: Fix typo
.brew: Install Lua 5.2

I need this specific version to test the new `GotoStatement`s in Lua during http://mths.be/luamin development.
.gitconfig: Remove the destructive `undopush` alias
Adds Basic Install Scripts that will change over time

Signed-off-by: Justin Yost <justin.yost@yostivanich.com>
Adds Git Command to Pull Changes from Both Origin and Upstream and Merge Changes

Signed-off-by: Justin Yost <justin.yost@yostivanich.com>
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  .gitconfig: Remove the destructive `undopush` alias
  .brew: Install Lua 5.2
  .osx: Fix typo

Signed-off-by: Justin Yost <justin.yost@yostivanich.com>

Conflicts:
	.gitconfig