added license and readme

LICENSE.txt

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+Copyright 2015 Catamorphic, Co.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

README.md

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+### LaunchDarkly Sample Javascript Application
 ###
+We've built a simple console 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#/).
+##### Build instructions
 #####
+1. Copy your feature flag key from your LaunchDarkly dashboard into the snippet in `index.html`

+2. Open `index.html` in your browser