clarify python version

Author: cdunn2001

Diff for: amalgamate.py

@@ -1,6 +1,6 @@
 """Amalgate json-cpp library sources into a single source and header file.
 
-Requires Python 2.6
+Works with python2.6+ and python3.4+.
 
 Example of invocation (must be invoked from json-cpp top directory):
 python amalgate.py