cmd/tsuru: refactoring AppInfo.Show
cmd/tsuru: refactoring AppInfo.Show

With this change, it's easier to solve #260.

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