Added Create Account Page

Added create account page for when the "Create Account" button is pressed on the MainActivity page.  The problem with the last commit was that for some reason the R.java file didn't generate when you guys pulled the update, but when I tried copying my R.java file into the new pulled directory, it worked so I guess I'll try sending you guys the file on FB and that should work.  Make sure to put it in realtalk/gen/com/example/realtalk along with the BuildConfig file.  Also, I fixed the broken string reference.  We can always revert back again if this doesn't work for whatever reason.  Hopefully we can find a better way to resolve this R.java problem.

Added Files:
CreateAccountActivity.java and associated files - Create Account Page

Modified Files:
MainActivity.java - changed layout and made the Create Account button redirect to the new page

Submitted by: blee92