removing duplicate files. All of the old src files were located in com.programmingthetux.Tutorial
Merge https://github.com/ciasaboark/Android-Shell

merging changes

MainActivity.java:
-added proper command splitting (will now split the command cd "foo bar" into the command cd with the single parameter "foo bar" [sans quotes])
-added method to clear screen
-added listener for key presses (should execute command on enter/return)
-added scrolling so that the last output is always visible

Cd.java:
-changes directories properly, checking that the directory exists and is readable
-handles relative paths (cd .., cd /sdcard/.., etc.)

Clear.java:
-clears screen
Work on ls command

Added where ls will list the directory contents. Still need to check for
permission or the app crashes.
Ls now prints off the contents of directories without crashing the app. Still need to change so it can print of file permissions and inodes
pwd will print of the current working directory
cleaned up the code and removed commented out code, so it appears easier to read.
removed the current_dir string because MainActivity.java has the current directory as a string too
updated code after compile
Merge remote-tracking branch 'upstream/master'

Conflicts:
	bin/classes.dex
	bin/resources.ap_
	src/com/example/com/programmingthetux/tutorial/MainActivity.java