Added New Roman Times, a proportional-typeface theme for Xcode.

Preview of the theme here http://objectivesea.tumblr.com/post/3109860705/newromantimesxcode4
restoring Monokai (was accidentally deleted)
Adding Instacodes Package

Fun plugin for showing off your code.
Changing to name of underlying xcodeproj file
Fixes #40 - Merge InstaCodes plugin from jstart/patch-1
Merge pull request #43 from jurre/master

add spec to check for valid file formats
Update packages.json
Merge pull request #38 from coryalder/patch-1

Added New Roman Times, a proportional-typeface theme for Xcode.
update README to include the screenshot field