v0.2.0

first release since rewriting replacing syte's python code by javascript code, I did a lot of changes and improvements:

• new code design structure
• split js code into 4 parts: core, services, blogs and plugins.
• add additional services support: google+, facebook, youtube,... and contact service
• add support to blogger as blogging platform
• add support for extra plugins: segment, gratipay widget,...
• improve disqus plugin
• less jquery code, and remove some unneeded libs: require.js, jquery.url, require.js-{json,text}
• make use of promise api
• update third-party libs
• add ci scripts to travis-ci using booth Makefile and node.js modules

Note: this is a pre-release, even it is almost ready for deployment on daily use environment. It is missing a setup documentation and it has no (and I'm not planning to add) support for IE and safari. for developers, the code design and api are not stable until later release.