adding tests section to readme

readme.textile

@@ -26,4 +26,18 @@ h3. Options
 
 h3. Methods
 
-p. OKShadow offers the method *setoption* so parameters can be changed after instantiation. It takes either a hash of parameters or a single key and value.
+p. OKShadow offers the method *setoption* so parameters can be changed after instantiation. It takes either a hash of parameters or a single key and value. For example:
+
+bc. $('#ok').okshadow();
+$('#ok').data("okshadow").setoption({
+  "color": "red",
+  "fuzzMin": 10,
+});
+
+h3. Run Tests
+
+p. OKFocus tests JavaScript with Jasmine. Run tests:
+
+bc. $ gem install jasmine
+$ jasmine init
+$ rake jasmine:ci