updated Go version to 1.14

Merge pull request #2 from hugoluchessi/chore/update_go_version

Chore/update go version

Bumped to Go 1.12 and go modules support

Merge pull request #1 from hugoluchessi/circle-ci-112

Added new image to ci

Middleware signature fix

Fixes on Use method to allow anonimous typed functions

Fully functional version

Current features:

• Easy interface
• Group routing
• Middlewares
• Parameter Context
• 100% stdlib compliant