added allauth to the requirements

requirements.txt

 Django==1.7
 argparse==1.2.1
+django-allauth==0.19.0
 django-autoslug==1.7.2
 django-braces==1.4.0
 django-crispy-forms==1.4.0
+django-gmucas==2.1.1
 django-gravatar2==1.1.4
 django-localflavor==1.0
 django-model-utils==2.2
+oauthlib==0.7.2
 psycopg2==2.5.4
+python-openid==2.2.5
+requests==2.5.1
+requests-oauthlib==0.4.2
 six==1.8.0
 wsgiref==0.1.2