package/python-simplegeneric: New package

Add 'simplegeneric'[1] package to Buildroot. Needed by IPython.

[1] https://pypi.python.org/pypi/simplegeneric

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
[Thomas: add entry in DEVELOPERS file, fix license.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/DEVELOPERS b/DEVELOPERS
index a3da397..d28e6fb 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -73,6 +73,7 @@
 
 N:	Andrey Smirnov <andrew.smirnov@gmail.com
 F:	package/python-decorator/
+F:	package/python-simplegeneric/
 
 N:	Andrew Ruder <andrew.ruder@elecsyscorp.com>
 F:	package/expect/