Added `phpbrew init` install phpbrew.fish to phpbrew_home and display init messages for fish-shell.
Added `phpbrew init` install phpbrew.fish to phpbrew_home and display init messages for fish-shell.

Signed-off-by: Rack Lin <4316f05055309cf237e0fde316dbde39db851065@gmail.com>

phpbrew/phpbrew,pierredup/phpbrew,pinkbigmacmedia/phpbrew,konomae/phpbrew,svetlyak40wt/phpbrew,dduca-sugarcrm/phpbrew,wellic/phpbrew,davidfuhr/phpbrew,williamn/phpbrew,zonuexe/phpbrew,davidfuhr/phpbrew,morozov/phpbrew,morozov/phpbrew,mengzyou/phpbrew,viniciusferreira/phpbrew,viniciusferreira/phpbrew,konomae/phpbrew,dduca-sugarcrm/phpbrew,konomae/phpbrew,phpbrew/phpbrew,davidfuhr/phpbrew,pierredup/phpbrew,mengzyou/phpbrew,pinkbigmacmedia/phpbrew,konomae/phpbrew,svetlyak40wt/phpbrew,hechunwen/phpbrew,hechunwen/phpbrew,mengzyou/phpbrew,davidfuhr/phpbrew,wellic/phpbrew,williamn/phpbrew,williamn/phpbrew,dduca-sugarcrm/phpbrew,hechunwen/phpbrew,wellic/phpbrew,svetlyak40wt/phpbrew,viniciusferreira/phpbrew,pierredup/phpbrew,dduca-sugarcrm/phpbrew,mengzyou/phpbrew,zonuexe/phpbrew,svetlyak40wt/phpbrew,viniciusferreira/phpbrew,zonuexe/phpbrew,pinkbigmacmedia/phpbrew,kayyyy/phpbrew,phpbrew/phpbrew,kayyyy/phpbrew,williamn/phpbrew,hechunwen/phpbrew,kayyyy/phpbrew,davidfuhr/phpbrew,pinkbigmacmedia/phpbrew,zonuexe/phpbrew,wellic/phpbrew,kayyyy/phpbrew,pierredup/phpbrew