v0.2.0: Merge pull request #7 from ww24/fix/api-error-handling

fix error handling

v0.1.3: Merge pull request #6 from ww24/develop

Develop

v0.1.2: Merge pull request #4 from ww24/fix/version-tag

implement -v flag

v0.1.0: Merge pull request #1 from ww24/fix/go-build

Fix go build env