update README

Author: nshalman

README.rst

@@ -2,13 +2,10 @@
 Python libusdt bindings
 ===============================
 
-.. image:: https://badge.fury.io/py/usdt.png
+.. image:: https://badge.fury.io/py/usdt.svg
     :target: http://badge.fury.io/py/usdt
 
-.. image:: https://pypip.in/d/usdt/badge.png
-        :target: https://pypi.python.org/pypi/usdt
-
-.. image:: https://travis-ci.org/nshalman/python-usdt.svg?branch=master
+.. image:: https://travis-ci.org/nshalman/python-usdt.svg
         :target: https://travis-ci.org/nshalman/python-usdt
 
 Python libusdt bindings
@@ -22,3 +19,5 @@ Features
 * Create USDT providers and probes
 * Fire probes
 * Fallback mode
+* Logging Module
+* Simple Function Boundary Tracer (FBT) decorator