Flask==0.10.1
-e git://github.com/SimonSapin/Frozen-Flask.git@508cb0ae8e74cff1411a5bb78dc386beb727dfec#egg=Frozen_Flask-dev
Jinja2==2.7.3
MarkupSafe==0.23
PIL==1.1.7
Werkzeug==0.9.6
beautifulsoup4==4.3.2
boto==2.18.0
gdata==2.0.18
itsdangerous==0.24
python-google-spreadsheet==2.0.0
requests==2.2.1
wsgiref==0.1.2

Flask==0.10.1
-e git://github.com/SimonSapin/Frozen-Flask.git@508cb0ae8e74cff1411a5bb78dc386beb727dfec#egg=Frozen_Flask-dev
Jinja2==2.7.3
MarkupSafe==0.23
pillow
Werkzeug==0.9.6
beautifulsoup4==4.3.2
boto==2.18.0
gdata==2.0.18
itsdangerous==0.24
python-google-spreadsheet==2.0.0
requests==2.2.1
wsgiref==0.1.2

Use pillow instead of PIL
Use pillow instead of PIL

pillow is better supported and easier to install!