Add .gitignore file and remove unnecessary files
Fixed Portal Bug

Fixed the bug that when you go backwards into a portal, you come out
the other as if you went forwards which will send you back into the
second portal and out the first etc. so you will zigzag between
the portals.
Fixed bug by adding bool 'IsGoingBackwards' so when you go
backwards, the portal will know and send you out the other with
a velocity of -40 instead of 40.
Also compiled code.
Add info comments on all files
Merge branch 'master' into menu
Add Pause Menu

Change gameTime structure to TimeSpan for pausing, and add PauseMenu
class. Also change Menu to abstract as well as implement the
PauseMenu to actually pause the game using the P key.
Changed .gitignore
Changed .gitignore file
Merge branch 'master' into menu
GlitchyDeath improvement and Pause Key

Add GlitchyDeath improvement that should shorten choppyness and CPU
and add the option to resume using the P key as well as pause.