Update README.md

Added Google Play search link
Merge pull request #1 from arialdomartini/master

2048 tetris
Merge pull request #2 from arialdomartini/master

Fix: Tetris version was called Numberwang
Update README.md

Fix typo
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Fix title
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Added links and AI Solver section
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Merged pull request @arialdomartini
Update README.md

Some other links added
Update README.md

Fix broken link
Renzi2048