allowing psutil to be higher to fix an anaconda issue

requirements.txt

@@ -12,6 +12,6 @@ fake-factory==0.3.2
 gitpython==0.1.7
 fuzzywuzzy==0.2
 setproctitle==1.1.8
-psutil==1.2.1
+psutil>=1.2.1
 Werkzeug==0.10.4
 ua-parser==0.3.6