Web store description limit update

Author: chall3ng3r

manifest.json

@@ -3,7 +3,7 @@
     "name": "QRCoder",
     "version": "2.0",
 
-    "description": "Quickly get QR Code for currently open page. Now using in-browser QR code generator. Source code is available at https://github.com/chall3ng3r/QRCoder-Chrome",
+    "description": "Quickly get QR Code for currently open page. Now using in-browser QR code generator.",
 
     "icons": {
 		"32": "gfx/qr-coder-32.png",
@@ -25,4 +25,4 @@
         "default_title": "QR Coder",
         "default_popup": "popup/qrcoder.html"
       }
-  }
+  }