Fix for the missing compiler option debug_info
- Added compiler_options as a new possible
  boss_db_opts option
- debug_info will be set if the app compiling
  the models has it already set in the rebar.config
  erl_opts or when it's explicit set through
  the compiler_options
Merge pull request #152 from synlay/feature/missing_debug_info_fix

Fix for the missing compiler option debug_info