add coveralls
add gemnasium
Option of custom stack middleware
Add docs.
Bump version to 0.0.3
Implemented methods: statistic, schedule, currency, employer, region, field
Bump version to 0.0.4
Fixed a bug in keyword 'encoding'
Delete file .ruby-version
Add methods vacancy and vacancy_employer.
Put the newline, fixed code style.
Fixed lapsus in the word encoding
Add coveralss.yml to .gitignore