Release v1.1.0

Added

• class Sun to calculate common info: sunrise,sunset, daylong
• Reference excel file: NOAA_Solar_Calculations_day, NOAA_Solar_Calculations_year
• Add Readme.md

Changed

• Refactor code
• Update test cases

Development Build

Merge pull request #1 from NghiaCaNgao/dev

Remove test type and add instruction in README.md