Merge pull request #160 from lschoepps/feature/company_logo_link

Added support for company link and logo
Fix for compatibility issue with exim, application.rb also needed to be
updated for 6.9
Added parameter description in init.pp
Parameter description for exim fix
Rspec test for exim fix
Merge pull request #159 from lschoepps/fix-exim

Fix for compatibility issue with exim
Removal of '\n' character in Rspec test