Fix issue #28

Fixed problem of one day diffrent when last year is leap year

Merge pull request #27 from opencafe/master

Merge develop branch into the Master branch

Merge branch 'develop' of https://github.com/opencafe/datium into dev…

…elop

Merge pull request #24 from opencafe/feature/fix-add-date

Fix jalali day of week return problem

Merge pull request #22 from opencafe/feature/fix-sub-date

Fix jalali day of the week return problem

Merge pull request #19 from opencafe/master

Master

Merge pull request #14 from opencafe/develop

minor update on README

test commit as my account

Merge branch 'master' of https://github.com/opencafe/datium