Fix error "AttributeError: 'module' object has no attribute (#233)
Fix error "AttributeError: 'module' object has no attribute (#233)

'PROTOCOL_SSLv3'"

Upgrading the Requests package to 2.6.0

Running debian 8.2 (jessie) I experience the following:

```
Traceback (most recent call last):
  File "dev.py", line 11, in <module>
    from puppetboard.app import app
  File "/srv/puppetboard/puppetboard/puppetboard/app.py", line 19, in <module>
    from pypuppetdb import connect
  File "/srv/puppetboard/virtenv-puppetboard/local/lib/python2.7/site-packages/pypuppetdb/__init__.py", line 61, in <module>
    from pypuppetdb.api import BaseAPI
  File "/srv/puppetboard/virtenv-puppetboard/local/lib/python2.7/site-packages/pypuppetdb/api/__init__.py", line 7, in <module>
    import requests
  File "/srv/puppetboard/virtenv-puppetboard/local/lib/python2.7/site-packages/requests/__init__.py", line 53, in <module>
    from .packages.urllib3.contrib import pyopenssl
  File "/srv/puppetboard/virtenv-puppetboard/local/lib/python2.7/site-packages/requests/packages/urllib3/contrib/pyopenssl.py", line 62, in <module>
    ssl.PROTOCOL_SSLv3: OpenSSL.SSL.SSLv3_METHOD,
AttributeError: 'module' object has no attribute 'PROTOCOL_SSLv3'
```

Bumped 'requests' version as suggested here: http://stackoverflow.com/questions/28987891/patch-pyopenssl-for-sslv3-issue
james-powis/puppetboard,grandich/puppetboard,johnzimm/puppetboard,james-powis/puppetboard,puppet-community/puppetboard,grandich/puppetboard,johnzimm/xx-puppetboard,voxpupuli/puppetboard,stoyansbg/puppetboard,grandich/puppetboard,tparkercbn/puppetboard,mterzo/puppetboard,tparkercbn/puppetboard,voxpupuli/puppetboard,johnzimm/puppetboard,johnzimm/puppetboard,mterzo/puppetboard,grandich/puppetboard,puppet-community/puppetboard,tparkercbn/puppetboard,mterzo/puppetboard,stoyansbg/puppetboard,mterzo/puppetboard,johnzimm/xx-puppetboard,james-powis/puppetboard,tparkercbn/puppetboard,johnzimm/xx-puppetboard,voxpupuli/puppetboard,puppet-community/puppetboard,johnzimm/xx-puppetboard,stoyansbg/puppetboard