functional bots, small refactoring, readme edit

README.md

@@ -1,10 +1,21 @@
-# Game (Linux)
+# Game (Linux) - Slither.io offline clone
 
-Game, based on https://github.com/imp5imp5/game_template_linux.
+- Snake should eat apples to grow
+- Current score displayed on top of the screen
+- There are bots that eat apples and can not be destroyed by player. Snake is destroyed when its head intersects bot
 
-### Build
+Game is based on https://github.com/imp5imp5/game_template_linux.
+
+
+### Build (xmake)
 ``sudo apt install g++ cmake libx11-dev xmake`` \
 ``xmake``
 
-### Run
+### Run (xmake)
 ``xmake run``
+
+### Build (cmake)
+``sudo apt install g++ cmake libx11-dev`` \
+``mkdir build && cd build`` \
+``cmake -DCMAKE_BUILD_TYPE=Release ..`` \
+``make``