Added screenshots and short readme

README.md

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+# 7not7
+## A 7x7 clone written in java
+
+## Summary
+
+7x7 is a concentration game which challenges you to connect 4 or more blocks of the same color on the game field.
+To make things harder each round n blocks of random colors get thrown upon the field and the number n increases with each level.
+You can choose the field size to be eighter 7x7, 8x8, 9x9 or 10x10.
+https://github.com/id101010/IN16NClock/blob/master/Doc/
+
+![Moving Blocks](https://github.com/id101010/7not7/blob/master/doc/movingBlocks.png)
+
+## How to play
+
+The goal is to clear as much lines as possible by stacking blocks of the same color in any direction.
+So you can eighter build up blocks vertically, horizontally or diagonal.
+
+## Tools and how to get them
+
+To make things more fun and to survive in higher levels there are 2 tools. 
+
+- FreeMove
+
+An undo simply undos the last action on the game field. At the beginning you start with only two undos. You'll get an undo on each level-up.
+
+- Undo
+
+Additionally you earn FreeMoves by completing combos. FreeMoves enable you to bend the space time continuum and replace a block anywhere on the game field even if its surrounded by other blocks. 
+
+## Combos
+
+A combo is a game move in which you clear more than just one distinct line in one move.
+
+![Combo Move](https://github.com/id101010/7not7/blob/master/doc/gettingCombo.png)
+
+## Used software
+
+- eclipse mars
+- git
+
+## Contributors
+
+- t-moe
+- id101010