laravel5: clean up

plugins/laravel5/laravel5.plugin.zsh

+# Alias
+alias la5='php artisan'
+alias la5cache='php artisan cache:clear'
+alias la5routes='php artisan route:list'
+alias la5vendor='php artisan vendor:publish'
+
 # Laravel5 basic command completion
 _laravel5_get_command_list () {
   php artisan --raw --no-ansi list | sed "s/[[:space:]].*//g"
 }
 
 _laravel5 () {
-  if [ -f artisan ]; then
-    compadd `_laravel5_get_command_list`
+  if [[ -f artisan ]]; then
+    compadd $(_laravel5_get_command_list)
   fi
 }
 
 compdef _laravel5 artisan
 compdef _laravel5 la5
-
-#Alias
-alias la5='php artisan'
-
-alias la5cache='php artisan cache:clear'
-alias la5routes='php artisan route:list'
-alias la5vendor='php artisan vendor:publish'