Updated fragment_main.xml
Made TextView with id 'display' scrollable.
Made the send buttom visible even in landscape view by using layout
weigth.
Updated AndroidManifest.xml.
Add permission to allow access to internet.
Updated TcpReceiverWorker.java
Add a Handler parameter to accept in constructor.
Updated TcpReceiver.java
Add a Handler parameter to accept in constructor to pass to
TcpReceiverWorker.
Updated MainActivity.java
Added a Handler to be signaled to poll uiMessageQueue.
Make Placeholder Fragment function as intended so message can still be
displayed after orientation change.
Added image-sending functionality.
Added images to display in res/drawable
Merge branch 'MAPP_HEAD' into testing

Conflicts:
	src/com/example/myfirstapp/MainActivity.java
Merge pull request #1 from DandanWang/testing_merge

Testing merge
Updated MainActivity.java
Clear the input editText after pressing the send button.
Merge pull request #2 from DandanWang/testing_cleartext

Updated MainActivity.java