beta 2 release!

-3 new missions, 1 new unit and 1 new character and lots of story!

-added melee attacks and created dynamic animations for them

-blind side attacks. any unit moving right next to another unit will get
counter attacked by assault type weapons

-upgrading is completely overhauled and much more functional

-AI slightly modified
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Update README.md
Update README.md
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Update README.md
patch 2.1 before testing

see readme.md
Merge pull request #3 from vaendryl/master

update to beta 2.1