Initial commit
Implement dummy method
Add a command line flag
Can return the string value of video info
Can return video info struct which is converted from xml
Change the name of function and the number of return variables
Change if clause to switch clause
Add error log
Add Login function, but it is tentative
Add gitignore file
Add test file of core.go
Use third party assert package
Add test case
Add login url parameter
Change type of return value of GetVideoThumbResponse function
Use third party library whose name is godotenv, which is a golang port of the Ruby dotenv project
Refactor
Change usage of gonico
Change package structure
Add ignore file to .gitignore