added license section, misc cleanup

Author: oxguy3

readme.md README.mdreadme.md renamed to README.md

@@ -1,6 +1,5 @@
 # DataRole API Client Library for PHP #
 
-## Description ##
 The DataRole API Client Library enables you to work with DataRole APIs on your server.
 
 ## Requirements ##
@@ -84,4 +83,20 @@ We accept contributions via Github Pull Requests, but all contributors need to b
 
 Run the PHPUnit tests with PHPUnit.
 
-    phpunit tests/
+    phpunit tests/
+
+## License ##
+
+Copyright 2016 HireWheel, LLC
+
+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.