docs/api: added docs about service list.
docs/api: added docs about service list.

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