Updated Composer.json file with improvements

Signed-off-by: Justin Yost <justin.yost@yostivanich.com>
Adds an .editorconfig file

Signed-off-by: Justin Yost <justin.yost@yostivanich.com>
Cleans up the name of the plugin and installation to GiftWrap

Updates everything to support the new naming scheme GiftWrap rather than CakePHP-GiftWrap

Signed-off-by: Justin Yost <justin.yost@yostivanich.com>
Error in ReadMe file

Error in Git installation section

Signed-off-by: Justin Yost <justin.yost@yostivanich.com>
Merge pull request #6 from loadsys/f/updated-composer-support

F/updated composer support