Updating to ignore temporary files.
Moving source files (PHP plugin, JS syntax highlighter) into new src directory.
Imports new project (Ant) build file.
Moves debug logger to its own file.
Reorganizes the project PHP files.

Moves the core plugin and logger PHP files into a dedicated PHP directory.
Imports initial Eclipse/Aptana Studio project configuration.
Renamed core plugin file to github_repo_content_retriever.php.
Updates to use a nearly empty plugin.php file for the plugin header/registration, and move the bulk of the plugin code into the GitHubRepoContentRetriever class and file.
Adds support for creating a plugin zip/archive for distribution.
Updates the distributable archive creation in the build script to create the archive in a dist folder.
Updates ignore list to include the new dist directory.