V 0.8.1

Many bug fixes and additions! Let me list a few:

• The message that tells you that there are available upgrade points to spend will now disappear if they are all used.
• Removed Vibration Detector (really didn't add to the gameplay experience)
• It is now possible to save and load your game
• Camera pan speed and music volume can now be set in the options menu
• Removed a bug that allowed player to open menu during match countdown - causing multiple potential issues.
• Fixed bug that would cause player to lose and win at the same time if the last enemy bot and the player bot were destroyed simultaneously