--show-config should not log.info so it can be JSON parseable

lib/config.js

@@ -54,7 +54,7 @@ function warnNodeDeprecations () {
 
 async function showConfig () {
   let config = await getAppiumConfig();
-  logger.info(JSON.stringify(config));
+  console.log(JSON.stringify(config));
 }
 
 function getNonDefaultArgs (parser, args) {

test/config-specs.js

@@ -36,13 +36,13 @@ describe('Config', () => {
     });
     describe('showConfig', () => {
       before(() => {
-        sinon.spy(logger, "info");
+        sinon.spy(console, "log");
       });
-      it('should log the config to logger.info', async () => {
+      it('should log the config to console', async () => {
         let config = await getAppiumConfig();
         await showConfig();
-        logger.info.calledOnce.should.be.true;
-        logger.info.getCall(0).args[0].should.contain(JSON.stringify(config));
+        console.log.calledOnce.should.be.true;
+        console.log.getCall(0).args[0].should.contain(JSON.stringify(config));
       });
     });
   });