readme and package.json changes

Author: ivictbor

README.md

@@ -7,7 +7,7 @@ With Painterro you can:
 - Paint lines and rectangles (alpha color can be used)
 - Add text
 
-![Painterro preview](docs/preview.png)
+![Painterro preview](https://raw.githubusercontent.com/ivictbor/painterro/master/docs/preview.png)
 
 Example usecase: You make screenshot by pressing `PrtSc` button, then open Painterro on your website, paste image, 
 crop it to interested area then highlight something with line/rectangle tool and/or add some text 

package.json

@@ -1,8 +1,8 @@
 {
   "name": "painterro",
-  "version": "0.0.1",
+  "version": "0.1.2",
   "description": "Embуedded html image editor",
-  "main": "painterro.js",
+  "main": "build/painterro.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
     "build": "webpack --optimize-minimize --progress",