* Minor fixes to README (more details on features) and a typo error.

* manifest.json updated for Firefox.  Needs to be manually changed
  before releasing for Chrome - all other code is identical.

README.md

@@ -1,6 +1,6 @@
 # JigSaw
 
-JigSaw is a Chrom/FireFox webextension that destroys productivity
+JigSaw is a Chrome/FireFox webextension that destroys productivity
 by allowing you to convert an image into a jigsaw puzzle.
 
 ## To use JigSaw:
@@ -14,6 +14,12 @@ puzzle.
 * Once you have entered JigSaw, you can always enter a new URL in the 
   input bar and submit.
 
+* Simple drag and drop use
+
+* Pieces stick to each other when they match correctly anywhere on the screen
+
+* Useful visual indicator when a piece is placed in the correct location
+
 * Ability to choose degree of difficulty (3x3 to 9x9 puzzle sizes)
 
 ## License & Copyright:

manifest.json

@@ -7,6 +7,13 @@
     "description": "__MSG_extensionDescription__",
     "homepage_url": "https://www.github.com/ushnisha/jigsaw/",
 
+    "applications": {
+        "gecko": {
+          "id": "[email protected]",
+          "strict_min_version": "52.0"
+        }
+    },
+
     "icons": {
         "128": "icons/jigsaw-128.png",
         "64": "icons/jigsaw-64.png",