v0.5.6

Changelog

ef96bfa Update add.go
8bffece Update full_guide.md
9d396b8 [skip travis] add benchmarking
28db79c [skip travis] add link to wiki
23eea7f [skip travis] add wiki link
0172e58 [skip travis] change logo
2df8bd0 [skip travis] change wiki link
0cc2dac [skip travis] made logo bigger
84961a3 [skip travis] remove some examples to wiki
5ece0f5 [skip travis] update docs
45876f0 [skip travis] update examples
5a150d0 [skip travis] update readme.md
e458559 [skip travis] update readme.md
206f0d6 [skip travis] update readme.md
468407d [skip travis] update readme.md
f8b480c [skip travis] update readme.md
7ded965 skip rspec
f2d4707 update to 0.5.6