add screenshots to readme.md

Author: shayandaneshvar

README.md

@@ -1,4 +1,4 @@
-# Huffman-Compressor
+# Huffman Compressor
 A text compressor with a rich gui that uses huffman tree.
 + Persian is supported as well.
 
@@ -8,3 +8,7 @@ A text compressor with a rich gui that uses huffman tree.
 + Files can be dragged and droped.
 
 ## Screenshots
+<img src="https://raw.githubusercontent.com/shayandaneshvar/Huffman-Compressor/master/screenshots/splash.png" alt="splash"></br>
+<img src="https://raw.githubusercontent.com/shayandaneshvar/Huffman-Compressor/master/screenshots/drag.png" alt="dragNdrop"></br>
+<img src="https://raw.githubusercontent.com/shayandaneshvar/Huffman-Compressor/master/screenshots/processEnc.png" alt="processEncode"></br>
+<img src="https://raw.githubusercontent.com/shayandaneshvar/Huffman-Compressor/master/screenshots/dec.png" alt="decode">