Merge pull request #9 from macoslib/master

Merge with master
Added MacSystemProfiler, minor changes

- Added MacSystemProfiler class to Additional Modules.
- Added Carbon.VersionAsInteger to standardize version-to-integer
conversions. (Moved code from SystemVersionAsInt.)
- Mofied Carbon.SystemVersionAsInt to use Carbon.VersionAsInteger. No
change in functionality.
- Added Carbon.IsMountainLion.
- Modified MacPListBrowser.
Fixed typo in release notes
Merge pull request #19 from ktekinay/master

Added MacSystemProfiler, minor changes
Updates to MacPListBrowser

Added StringValue property.
Fixed problem preventing compile in RS 2012r2.1
Merge pull request #20 from ktekinay/master

Updated MacPListBrowser, fixed compile problem in RS 2012r2.1
Rename ValuesAsArrayOfStrings to StringValues; this method now raises a TypeMismatchException when some array element does not inherit from NSString instead of skipping; fix several occurrences of a bug in NSFontManager in which NSArray.VariantValue was being returned instead of a String array.
Remove commented-out code.
Clean up code here and there.
Merge pull request #21 from declaresub/master

Fix issues in NSFontManager.
Rewrite NSString; conversion to and from String is now implemented.  Changes to this class required changing other code as well.
Merge pull request #22 from declaresub/master

Rewrite NSString to add autoconversion to and from NSString.
Add PlaceholderString extension methods for TextField.
Merge pull request #23 from declaresub/master

Add TextField.PlaceholderString to extension module.
Merge remote-tracking branch 'refs/remotes/github-macoslib/master'