Merge pull request #1 from mhallendal/make-compile-osx

Update base SDK and CorePlot URL
Merge pull request #2 from mhallendal/modernize-code-base

Modernize code base
Use CocoaPods for CorePlot instead of submodule
Install CocoaAsyncSocket through CocoaPods

Instead of having a copy in the project.
ACEView for syntax highlighter and proper editor

First step towards getting a better editor for writing the Nu code in place.

Use submodules for ACEView
Fix the resizing of send command button