moved context menu example code out of the main page
add in stubs for file explorer example
implemented basic directory dialog example
enable toolbar in the package.json, so that we can access dev tools
remove the timestamp
added event handler to display the user selected directory path in the console
retrieve selected project directory and store into global context
Merge pull request #7 from hermwong/filesystem

retrieve selected project directory and store into global context
[#6] Fix Grunt using cached builds (temporary fix).