Merge pull request #34 from pdpiech/master

Revise icon name, add Commons IO library properly
Merge pull request #35 from pdpiech/master

Fix @JelloRanger's changes and revise SendFragment to allow NFC to be disabled
Merge pull request #36 from pdpiech/master

Revise no_files_text to adhere to guidelines
Merge pull request #37 from pdpiech/master

Revise existing javadoc comments, add more comments
Merge pull request #39 from pdpiech/master

Refactor ReceiveActivity functionality into Receive
Merge pull request #40 from pdpiech/master

Add size-optimized icons and auto-open tab after file transfer
Merge pull request #41 from pdpiech/master

Update Javadocs
Merge pull request #42 from pdpiech/master

Change copyFile to moveFile
adding to overall listview xml

Added xml to view all the document properties.
Added FileViewer class, changed Receive

Added FileViewer class that contains openFile() function. This function
opens a file by creating an Intent of the appropriate type given the
file extension of the file. This should be a straightforward, easy way
to open files using Android's default applications. Usage of this class
is pretty simple and can easily be added for viewing documents in the
DocumentListFragment.

Also added mFileDest variable to hold the path to the file after it is
saved locally to the apps external storage on the SD card.

Javadocs already included, I think they're the correct format.
Merge remote-tracking branch 'upstream/master'