bump version to 1.2.1 for exception hotfix (#110)

Author: jonathanrcross

setup.py

@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name='python-nomad',
-    version='1.2.0',
+    version='1.2.1',
     install_requires=['requests'],
     packages=['nomad', 'nomad.api'],
     url='http://github.com/jrxfive/python-nomad',