remove 'install' and 'helpers', replace with 'wp-qa-' scripts...

...to make script names more unique and to separate into scripts
that perform specific functions: syntax checking, php unit tests, and
php code sniffs using WP coding standards. support for using 'bin'
dir path that will vary based on project type (themes+plugins, plugin)
update syntax check and code sniff to only use files in the project
source tree by executing 'git ls-tree'
update bin script paths and composer.lock file...
Merge pull request #2 from voceconnect/wp-qa-scripts

Wp qa scripts