Small Animation Update - Update v0.1.1

Hi, just a small update based on some of the feedback I've got.

• Bird now tilts towards vertical directions in flight.  
• Added a flutter animation when landing so the poor creature doesn't do a faceplant. 
• Removed momentum from landing.
• Added restart button.
• ...And other minor improvements and fixes.

Known bugs:

• The bird has pointy wings for some reason in the WebGL build. 

Thanks for playing!