Update README files

Author: freedomofkeima

README.md

@@ -84,6 +84,12 @@ The handler's code is in `test.py` and the function name of the handler is `hand
 The source depends on 3rd party library `rx` and it is installed in the directory `lib`.
 The test event in json format is in `event.json` file.
 
+#### Installing `rx` library in `lib/`
+
+``` bash
+pip install --target lib rx==1.6.1
+```
+
 #### Content of `test.py`:
 
 ``` python
@@ -163,5 +169,6 @@ event = {
 }
 context = Context(5)
 
-call(test.handler, event, context)
+if __name__ == '__main__':
+    call(test.handler, event, context)
 ```

README.rst

@@ -90,6 +90,13 @@ handler is ``handler``. The source depends on 3rd party library ``rx``
 and it is installed in the directory ``lib``. The test event in json
 format is in ``event.json`` file.
 
+Installing ``rx`` library in ``lib/``:
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. code:: bash
+
+   pip install --target lib rx==1.6.1
+
 Content of ``test.py``:
 ^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -179,7 +186,8 @@ Sample
    }
    context = Context(5)
 
-   call(test.handler, event, context)
+   if __name__ == '__main__':
+       call(test.handler, event, context)
 
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