Move OmniAuth configuration details into a non-revision controlled file.

Provide an omniauth.rb.sample file to avoid encouraging end-users to commit
their provider access details (passwords or api tokens) into their git
repositories.

Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>

config/initializers/omniauth.rb.sample

@@ -0,0 +1,15 @@
+# Copy this file to 'omniauth.rb' and configure it as necessary.
+# The wiki has further details on configuring each provider.
+
+Devise.setup do |config|
+  # config.omniauth :github 'APP_ID', 'APP_SECRET', :scope => 'user,public_repo'
+
+  # config.omniauth :ldap, 
+  #     :host => 'YOUR_LDAP_SERVER',
+  #     :base => 'THE_BASE_WHERE_YOU_SEARCH_FOR_USERS',
+  #     :uid => 'sAMAccountName',
+  #     :port => 389,
+  #     :method => :plain,
+  #     :bind_dn => 'THE_FULL_DN_OF_THE_USER_YOU_WILL_BIND_WITH',
+  #     :password => 'THE_PASSWORD_OF_THE_BIND_USER'
+end