Fix: undefined coldef JS error being thrown on resize of pinned ui grid column

Contains a fix for java script column definintion error thrown on resize of pinned ui grid column.

Author: Jameel99

package.json

@@ -14,7 +14,8 @@
     "commit": "git-cz",
     "e2e": "grunt test:ci-e2e",
     "init": "validate-commit-msg",
-    "lint": "grunt newer:jshint",    
+    "lint": "grunt newer:jshint",
+    "postinstall": "bower install",
     "release": "lerna publish from-package",
     "start": "grunt dev --fast",
     "test": "grunt test",

packages/resize-columns/src/js/ui-grid-column-resizer.js

@@ -119,8 +119,7 @@
           if (position === 'left') {
             // Get the column to the left of this one
             var colIndex = renderContainer.visibleColumnCache.indexOf(col);
-            if (colIndex === 0) {
-              //set visibleColumnCache to 0 if colIndex is 0
+            if (colIndex === 0) {              
               return renderContainer.visibleColumnCache[0];
             }
             return renderContainer.visibleColumnCache[colIndex - 1 * rtlMultiplier];