Use var.CWD so that Lighty runs from the project root

No matter where the project root lives.
Bump to CocoaPods v0.23.0
Launch Lighty in the background as a user process
Look for Lighty at /usr/local/sbin

PATH does not contain /usr/local/sbin, by default.
Merge branch 'feature/fix_travis_ci' into develop
Remove launch daemon artifacts

Travis launches Lighty as a background user process.
Requires iOS 6.1 or above

README now matches Pod specification.
Merge pull request #3 from royratcliffe/develop

Fixes Travis CI Builds
Fixes issue with how the Tests pre/post actions managed lighttpd.
Switches to NSOperations for processing embedded resources.
Merge pull request #4 from ObjectiveHAL/develop

Improvement to how background operations are performed.
Cleans up use of NSOperation. Reliably calls completion handler now.
Merge pull request #5 from ObjectiveHAL/develop

Cleans up use of NSOperation. Reliably calls completion handler now.
Exposes NSOperation-based traversal. Enables more complex interactions.
Addresses an issue with the Cocoapods version on Travis.
Merge pull request #6 from ObjectiveHAL/develop

Exposes NSOperation-based traversal. Enables more complex interactions.
Fixes crash when completion handler is nil.
Merge pull request #7 from ObjectiveHAL/develop

Fixes crash when completion handler is nil.
WIP - Working on improving how traversal works.
Changes how callers interact with framework.

Introduced a subclass of AFJSONRequestOperation called OHResourceRequestOperation. This is now used to encapsulate the asynchronous networking operations. Effect is to simplify the code and remove the need for our own NSOperationQueue.  OHClient now communicates with caller via KVO.  Test demonstrating use of KVO is included.

Started modification to how OHResource will be used to traverse embedded and linked resources.