Update README
Merge pull request #8 from mogetutu/master

Ruby code styling and formatting
Set up Yard
Add yard docs for Class: Pesapal::Merchant
Add files to .yardopts file
Add yard docs for Class: Pesapal::Details
Add yard docs for Class: Pesapal::Status
Remove unnecessary comments and spacing
Add yard docs for Class: Pesapal::Post
Polish up comments
Document protected methods
Improve namespacing
Correct wrong step count
Add yard docs for Class: Pesapal:: Railtie
Narrow down parsing to relevant files and some cleanup/polishing
Add yard docs for Class: Pesapal::Oauth
Merge pull request #10 from itsmrwave/yard-documentation

Add code documentation for better maintainability using Yard (issue #7)