add class parameters to configure default_settings.py

This commit adds class parameters to the puppetboard class to
automatically setup the puppetboard configuration file default_settings.py

The following parameters were added:

  $puppetdb_host = 'localhost'
  $puppetdb_port = 8080
  $puppetdb_key = 'None'
  $puppetdb_ssl = 'False'
  $puppetdb_cert = 'None'
  $puppetdb_timeout = 20
  $dev_listen_host = '127.0.0.1'
  $dev_listen_port = 5000
  $unresponsive = 3
  $enable_query = 'True'
  $python_loglevel = 'info'

The experimental parameter changed from true/false to a string
to support the Python bool True/False:

  $experimental = 'False'
Merge pull request #10 from juliushaertl/config

add class parameters to configure default_settings.py
updating README
Fix problem with pip install git requirement
Merge pull request #11 from pavel-drobushevich/gitRequirements

Fix problem with pip install git requirement
Document parameters for all classes, and variables used by templates
PUPPETDB_SSL setting is now PUPPETDB_SSL_VERIFY

In the current master branch of puppetboard the PUPPETDB_SSL setting in
default_settings.py was renamed to PUPPETDB_SSL_VERIFY. This patch changes
this in the corresponding template but doesn't touch the $puppetdb_ssl
parameter of the puppetboard puppet class in init.pp for now.

Please consider changing the parameter name to $puppetdb_ssl_verify in
future releases.

Signed-off-by: Franz Pletz <fpletz@fnordicwalking.de>
Merge pull request #12 from jantman/param_docs

Document parameters for all classes, and variables used by templates
Merge pull request #13 from Mayflower/fix/settings-ssl-verify

PUPPETDB_SSL setting is now PUPPETDB_SSL_VERIFY
new release
Users can specify Puppetboard Git SHA to use

Allow a user to specify a Git commit, branch, or tag from Puppetboard's
Git repo. Default value continues to use latest commit.
Add stdlib version requirement to Modulefile

Add requirement on version >= 3.0.0 of stdlib to Modulefile. Version 3.x
of stdlib supports Puppet 2.7.x and Puppet 3. Without this, versions of
librarian-puppet <= 0.9.10 choke.
Merge pull request #15 from bderickson/stdlib_version

Add stdlib version requirement to Modulefile
Merge pull request #14 from bderickson/puppetboard_revision

Users can specify Puppetboard Git SHA to use
updating readme
adding mod_wsgi to documentation
Permit passing $proxy param

Enables pip/virtualenv to traverse a HTTP proxy
updated README
Merge pull request #17 from huit/python_proxy

Permit passing $proxy param
Moar Docs!