finish updating readme to spec

Author: mmrj

README.md

@@ -1,6 +1,8 @@
 ### LaunchDarkly sample JavaScript application

 
-We've built a simple browser application that demonstrates how LaunchDarkly's SDK works.
Below, you'll find the basic build procedure, but for more comprehensive instructions, you can visit your [Quickstart page](https://app.launchdarkly.com/quickstart#/) or the [JavaScript SDK reference guide](https://docs.launchdarkly.com/sdk/client-side/javascript).
+We've built a simple browser application that demonstrates how LaunchDarkly's SDK works.

+
+Below, you'll find the basic build procedure, but for more comprehensive instructions, you can visit your [Quickstart page](https://app.launchdarkly.com/quickstart#/) or the [JavaScript SDK reference guide](https://docs.launchdarkly.com/sdk/client-side/javascript).
 
 #### Build instructions

 
@@ -13,4 +15,4 @@ const flagKey = 'my-flag-key';
 
 2. Open `index.html` in your browser.
 
-You should receive the message "The <flag key> feature flag evaluates to <flag value>."
+You should receive the message "The <flagKey> feature flag evaluates to <flagValue>." The application will run continuously and react to the flag changes in LaunchDarkly.