Fixed groovyw logger warning
import groovy.json.JsonSlurper
+@Grab(group='org.slf4j', module='slf4j-api', version='1.6.1')
+@Grab(group='org.slf4j', module='slf4j-nop', version='1.6.1')
+
@GrabResolver(name = 'jcenter', root = 'http://jcenter.bintray.com/')
@Grab(group = 'org.ajoberstar', module = 'grgit', version = '1.9.3')
import org.ajoberstar.grgit.Grgit
