misc/bash-completion: added unit-add and unit-remove
misc/bash-completion: added unit-add and unit-remove

I know unit-remove does not exist yet, but it will, soon :-)

Related to #248 and #252.

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