Refresh requirements.txt file

requirements.txt

 alembic==0.8.8
-aniso8601==1.1.0
-bcrypt==3.1.1
-blinker==1.4
-cffi==1.8.3
 click==6.6
 Flask==0.11.1
-Flask-Bcrypt==0.7.1
 Flask-Login==0.3.2
-Flask-Mail==0.9.1
 Flask-Migrate==2.0.0
-Flask-Principal==0.4.0
-Flask-RESTful==0.3.5
 Flask-Script==2.0.5
-Flask-Security==1.7.5
 Flask-SQLAlchemy==2.1
 Flask-WTF==0.13.1
 itsdangerous==0.24
 Jinja2==2.8
 Mako==1.0.4
 MarkupSafe==0.23
-passlib==1.6.5
-pycparser==2.16
-PyMySQL==0.7.9
-python-dateutil==2.5.3
 python-editor==1.0.1
-pytz==2016.7
-six==1.10.0
-SQLAlchemy==1.1.1
+SQLAlchemy==1.1.2
 Werkzeug==0.11.11
 WTForms==2.1