Add .keep files
Fix go application
Check erros
ok, maybe just use go-gypsy for now.

we should implement a yaml parser for this.
Index handler: render the index html template
Add gatsby/reflect.go
helper functions
Add cache.go
get struct name
Add column name cache
refactro reflect methods
Remove fmt related code
Move sql reflect methods to sqlutils/
Add reflect_test.go
test internal field
remove fmt
fix reflect_test
Add GetColumnMap func
split tag attributes, and get first attribute to generate column names
use sort to check the returned slices