Add installation guide and game controls

Author: pravj

README.md

@@ -9,9 +9,24 @@ puzzl is an intelligent implementation of the classical sliding-puzzle game.
 
 It's built on top of Golang's *concurrency primitives*. It uses *goroutines* and *channels* for inter process communications to provide real time notification experience in unix terminals.
 
-puzzl comes with an in-built solver(A* powered) which can solve any puzzle configuration faster than Iron Man. :zap:
-
-![puzzl]()
+puzzl comes with an in-built solver which can solve any puzzle configuration faster than Iron Man. :zap:
+
+![puzzl](https://github.com/pravj/puzzl/blob/development/puzzl.gif?raw=true)
+
+####Installtion
+```go
+go get github.com/pravj/puzzl
+```
+* Make sure that the workspace's **bin** directory is added to your **PATH**
+```go
+export PATH=$PATH:$GOPATH/bin
+```
+
+####Controls
+* Start the game with the command *puzzl*.
+* Use Arrow Keys to move the blank tile wherever you want.
+* Press 'h' or 'H' to get any hint for next move.
+* Press ESC key to quit the game.
 
 ---