Add pypi badges and alt projects preamble

Author: Tyler Goodlet

README.md

@@ -1,4 +1,6 @@
 # python-ESL
+[![version](https://img.shields.io/pypi/v/python-ESL.svg)](https://pypi.python.org/pypi/python-ESL/1.4.18)
+![downloads](https://img.shields.io/pypi/d/python-ESL.svg)
 
 This is FreeSWITCH's [Python ESL SWIG wrapper](https://freeswitch.org/confluence/display/FREESWITCH/Python+ESL)
 pulled directly out of tree on version `1.4.18` with no modifications.
@@ -9,3 +11,16 @@ easy to install with pip:
     pip install python-ESL
 
 It should work on both python 2 and 3.
+
+## Alternative Projects
+This packaging is duplicate of a couple of other projects, namely,
+- [freeswitch-esl-python](https://github.com/gurteshwar/freeswitch-esl-python)
+- And a later [rework by victor-torres](https://github.com/victor-torres/freeswitch-esl-python)
+
+The first is not hosted on `pypi` and requires git while the second [is](https://pypi.python.org/pypi/FreeSWITCH-ESL-Python/1.2)
+but does not leverage the built in SWIG support of `distutils` nor
+does it document the version of FreeSWITCH from which it was derived.
+In our opinion neither is well suited for long term maintenance.
+
+If you seek a **pure Python** alternative checkout
+[greenswitch](https://github.com/EvoluxBR/greenswitch).