chore(Tests): Fixed new Date() calls for Safari

Commit 0259aab added tests for rowSearcher but they were failing on Safari
5 because it doesn't allow creating dates from strings where the delimiter
is a dash. Changed to slashes.

Also updated DEVELOPER.md to include this as a warning for test creation.

DEVELOPER.md

@@ -397,6 +397,10 @@ Deployment to http://ui-grid.info/ is done automatically when pushed to ui-grid
 
 1. Use snake-case for class names, not camelCase.
 
+# Tests
+
+* **Note:** Safari 5 does not allow creating dates from strings where the delimiter is a dash, i.e. `new Date('2015-5-23')` will fail. This will cause your tests to work on all browsers but bomb on Safari 5 and you will have a hard time discovering why. Instead, use slashes like so: `new Date('2015/5/23')`.
+
 # Performing a release
 
 Run these grunt tasks. Look at the grunt-bump module for how to specify a major/minor/patch/pre-release version. This series will bump the version in package.json, update the changelog for that version, then commit the changes and add a new git tag for the version.

test/unit/core/services/rowSearcher.spec.js

@@ -13,28 +13,28 @@ describe('rowSearcher', function() {
     it('should be able to compare dates', function() {
       var grid = {
         getCellValue: function() {
-          return '2015-05-23';
+          return '2015/05/23';
         }
       };
 
       var filter = {
-        term: '2015-05-24',
+        term: '2015/05/24',
         flags: { date: true },
         condition: uiGridConstants.filter.GREATER_THAN
       };
-      expect(rowSearcher.runColumnFilter(grid, 1, 2, filter)).toBe(false);
+      expect(rowSearcher.runColumnFilter(grid, 1, 2, filter)).toBe(false, 'date not greater than');
 
-      filter.term = '2015-05-22';
+      filter.term = '2015/05/22';
       filter.condition = uiGridConstants.filter.GREATER_THAN;
-      expect(rowSearcher.runColumnFilter(grid, 1, 2, filter)).toBe(true);
+      expect(rowSearcher.runColumnFilter(grid, 1, 2, filter)).toBe(true, 'date is greater than');
 
-      filter.term = '2015-05-24';
+      filter.term = '2015/05/24';
       filter.condition = uiGridConstants.filter.GREATER_THAN;
-      expect(rowSearcher.runColumnFilter(grid, 1, 2, filter)).toBe(false);
+      expect(rowSearcher.runColumnFilter(grid, 1, 2, filter)).toBe(false, 'date not greater than again');
 
-      filter.term = '2015-05-23';
+      filter.term = '2015/05/23';
       filter.condition = uiGridConstants.filter.GREATER_THAN_OR_EQUAL_TO;
-      expect(rowSearcher.runColumnFilter(grid, 1, 2, filter)).toBe(true);
+      expect(rowSearcher.runColumnFilter(grid, 1, 2, filter)).toBe(true, 'date greater than or equal to');
     });
   });
 });