webgestalt v0.3.0 - NTA, CLI export and better documentation

What's Changed

• update to use serialize by @iblacksand in #21
• add NTA to webgestalt by @iblacksand in #22
• add JSON export to CLI by @iblacksand in #23
• better docs by @iblacksand in #24
• update readmes and remove examples by @iblacksand in #25

Full Changelog: v0.2.0...v0.3.0