clarify that it is the apache 2 licence

LICENCE.md

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+Apache License
+==============
+
+_Version 2.0, January 2004_  
+_&lt;<http://www.apache.org/licenses/>&gt;_
+
+### Terms and Conditions for use, reproduction, and distribution
+
+#### 1. Definitions
+
+“License” shall mean the terms and conditions for use, reproduction, and
+distribution as defined by Sections 1 through 9 of this document.
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+“Work” shall mean the work of authorship, whether in Source or Object form, made
+available under the License, as indicated by a copyright notice that is included
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+#### 2. Grant of Copyright License
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+#### 5. Submission of Contributions
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+#### 8. Limitation of Liability
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+contract, or otherwise, unless required by applicable law (such as deliberate
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+
+_END OF TERMS AND CONDITIONS_