text: Title: Update to support werkzeug >= 0.12
  Body: > Could not find a version that matches werkzeug==0.12,>=0.14
  > - Werkzeug [required: ==0.12, installed: 0.14.1]
   This is colliding with everything that is using the new version. 
  
  ## Your Environment
  <!--- Include as many relevant details about the environment you experienced the bug in -->
  * Zappa version used: 0.45.1
  * Operating System and Python version: Ubuntu 16.04 TLS
  * The output of `pip freeze`: 
  `absl-py==0.2.2
  argcomplete==1.9.2
  astor==0.6.2
  base58==0.2.4
  bleach==1.5.0
  boto3==1.7.35
  botocore==1.10.35
  certifi==2018.4.16
  cfn-flip==1.0.3
  chardet==3.0.4
  click==6.7
  docutils==0.14
  durationpy==0.5
  Flask==1.0.2
  future==0.16.0
  gast==0.2.0
  grpcio==1.12.1
  h5py==2.8.0
  hjson==3.0.1
  html5lib==0.9999999
  idna==2.6
  itsdangerous==0.24
  Jinja2==2.10
  jmespath==0.9.3
  kappa==0.6.0
  Keras==2.2.0
  Keras-Applications==1.0.2
  Keras-Preprocessing==1.0.1
  lambda-packages==0.19.0
  Markdown==2.6.11
  MarkupSafe==1.0
  numpy==1.14.4
  pandas==0.23.0
  placebo==0.8.1
  protobuf==3.5.2.post1
  python-dateutil==2.6.1
  python-slugify==1.2.4
  pytz==2018.4
  PyYAML==3.12
  requests==2.18.4
  s3transfer==0.1.13
  scipy==1.1.0
  six==1.11.0
  tensorboard==1.8.0
  tensorflow==1.8.0
  termcolor==1.1.0
  toml==0.9.4
  tqdm==4.19.1
  troposphere==2.3.0
  Unidecode==1.0.22
  urllib3==1.22
  Werkzeug==0.14.1
  wsgi-request-logger==0.4.6
  zappa==0.45.1`
  
  