docs: initial api docs.
docs: initial api docs.

related to #81.

hcxiong/tsuru,4eek/tsuru,hcxiong/tsuru,ggarnier/tsuru,mderaldo/tsuru,Endika/tsuru,Endika/tsuru,kgrvamsi/tsuru,ArxdSilva/tsuru,ggarnier/tsuru,gciotta/tsuru,gwmoura/tsuru,cgvarela/tsuru,tuxmonteiro/tsuru,ArxdSilva/tsuru,RichardKnop/tsuru,mderaldo/tsuru,jblancett/tsuru,jblancett/tsuru,tsuru/tsuru,firebitsbr/tsuru,tsuru/tsuru,firebitsbr/tsuru,firebitsbr/tsuru,tuxmonteiro/tsuru,hugoantunes/tsuru,gciotta/tsuru,ArxdSilva/tsuru,ArxdSilva/tsuru,hugoantunes/tsuru,4eek/tsuru,jblancett/tsuru,RichardKnop/tsuru,cgvarela/tsuru,guilhermebr/tsuru,tuxmonteiro/tsuru,gwmoura/tsuru,ggarnier/tsuru,tsuru/tsuru,RichardKnop/tsuru,guilhermebr/tsuru,tsuru/tsuru,gciotta/tsuru,guilhermebr/tsuru,cezarsa/tsuru,cezarsa/tsuru,gwmoura/tsuru,guilhermebr/tsuru,4eek/tsuru,cezarsa/tsuru,hcxiong/tsuru,ggarnier/tsuru,cgvarela/tsuru,Endika/tsuru,kgrvamsi/tsuru,mderaldo/tsuru,kgrvamsi/tsuru,cezarsa/tsuru