don't escape search input for regex

The search code used to use 'string'.search which takes regex
input. Now it used indexOf, so escaping is unnecessary and
causes search to break after on of the special characters is
entered.

From: javve#721

__test__/search.test.js

@@ -196,22 +196,24 @@ describe('Search', function () {
     })
   })
 
-  //
-  // describe('Special characters', function() {
-  //   it('should escape and handle special characters', function() {
-  //     list.add([
-  //       { name: 'Jonny&Jabba' },
-  //       { name: '<Leia' },
-  //       { name: '>Luke' },
-  //       { name: '"Chewie"' },
-  //       { name: "'Ewok'" }
-  //     ]);
-  //     var result = list.search('Leia');
-  //     console.log(result);
-  //     expect(result.length).toEqual(1);
-  //     var result = list.search('<');
-  //     console.log(result);
-  //     expect(result.length).toEqual(1);
-  //   });
-  // });
+  describe('Special characters', function() {
+    it('should escape and handle special characters', function() {
+      list.add([
+        { name: 'Jonny Jr.' },
+        { name: 'Jonny&Jabba' },
+        { name: '<Leia' },
+        { name: '>Luke' },
+        { name: '"Chewie"' },
+        { name: "'Ewok'" }
+      ]);
+      var result = list.search('Leia');
+      expect(result.length).toEqual(1);
+
+      var result = list.search('<');
+      expect(result.length).toEqual(1);
+
+      var result = list.search('Jr.');
+      expect(result.length).toEqual(1);
+    });
+  });
 })

src/search.js

@@ -28,7 +28,6 @@ module.exports = function (list) {
     },
     setSearchString: function (s) {
       s = list.utils.toString(s).toLowerCase()
-      s = s.replace(/[-[\]{}()*+?.,\\^$|#]/g, '\\$&') // Escape regular expression characters
       searchString = s
     },
     toArray: function (values) {