Issue #442 - Attempt at fixing Editing in 2.0.6

-Removed the $eval on COL_FIELD placeholder
-Simplified ng-input to only be concerned with hiding keystrokes and
using ESC to backout edit
-Use ng-model in EditableCellTemplate to do actual binding

src/directives/ng-cell.js

@@ -5,11 +5,11 @@
             return {
                 pre: function($scope, iElement) {
                     var html;
-                    var cellTemplate = $scope.col.cellTemplate.replace(COL_FIELD, '$eval(\'row.entity.\' + col.field)');
+                    var cellTemplate = $scope.col.cellTemplate.replace(COL_FIELD, 'row.entity.' + $scope.col.field);
 					if($scope.col.enableCellEdit){
 						html =  $scope.col.cellEditTemplate;
 						html = html.replace(DISPLAY_CELL_TEMPLATE, cellTemplate);
-						html = html.replace(EDITABLE_CELL_TEMPLATE, $scope.col.editableCellTemplate.replace(COL_FIELD, '$eval(\'row.entity.\' + col.field)'));
+						html = html.replace(EDITABLE_CELL_TEMPLATE, $scope.col.editableCellTemplate.replace(COL_FIELD, 'row.entity.' + $scope.col.field));
 					} else {
 					    html = cellTemplate;
 					}

src/templates/editableCellTemplate.html

@@ -1 +1 @@
-<input ng-class="'colt' + col.index" ng-input="COL_FIELD" />
+<input ng-class="'colt' + col.index" ng-input="COL_FIELD" ng-model="COL_FIELD" />