v0.4.1

Changelog

8d7dc99 small fix to README.
cbab815 initial commit
bb30f39 fix typo
f20daa5 fix profile check. add message with current hosts file being used.
21078d2 define some error vars and improve error handling. add more output to commands. sort cmd functions.
60d2fc5 change to common options
c61de3b better README.md and tweak flags.
947ae09 add set domains variant, same as add
46b3f0c add sample usage gif.
e958863 add more info and docs.
69c25fe add missing go.sum file.
aadb4fd add generated binary to .gitignore
ecbe34e Merge pull request #3 from pacodes/master
24a6c43 Merge pull request #2 from gkze/master
6fb0630 Handle empty comment lines
a2614c4 Added command for adding domains to hosts file and some tests