cmd/tsuru: update client version to 0.5
cmd/tsuru: update client version to 0.5

This version includes multiple changes related to multi-instance
support:

  - new commands unit-add and unit-remove
  - new parameter to app-create command (--units, to indicate how many
    units)
  - change app-info output to display information about units
  - change app-list output to display information about units
  - remove app information about app state from app-info output (there
    is no state in apps anymore)

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