Added links to relevant pages used as reference.

This was discussed at awsdocs#10

Author: hassanfarid

README.md

@@ -2,8 +2,10 @@
 
 Lambda User Guide and API operations and how it integrates with other AWS Service
 
+Start  with documentaion [index](/doc_source/index.md)
+
 ## License Summary
 
-The documentation is made available under the Creative Commons Attribution-ShareAlike 4.0 International License. See the LICENSE file.
+The documentation is made available under the Creative Commons Attribution-ShareAlike 4.0 International License. See the [LICENSE](./LICENSE) file.
 
-The sample code within this documentation is made available under a modified MIT license. See the LICENSE-SAMPLECODE file.
+The sample code within this documentation is made available under a modified MIT license. See the [LICENSE-SAMPLECODE](./LICENSE-SAMPLECODE) file.