feat(list): make services the default list type

Before environments and builds where the default type. This seems confusing for new folks. So the
default is changed to "services". With the upcoming config capabilities, people can change that
behavior

BREAKING CHANGE: Default output of "twilio-run list" changed

fix: #44

Author: dkundel

src/commands/list.ts

@@ -95,6 +95,7 @@ async function getConfigFromFlags(flags: ListCliFlags): Promise<ListConfig> {
   }
 
   const types = flags.types.split(',') as ListOptions[];
+  console.log(types);
 
   return {
     cwd,
@@ -155,7 +156,7 @@ export async function handler(flags: ListCliFlags): Promise<void> {
 
 export const cliInfo: CliInfo = {
   argsDefaults: {
-    types: 'environments,builds',
+    types: 'services',
   },
   options: {
     'service-name': {
@@ -216,8 +217,19 @@ export const cliInfo: CliInfo = {
 };
 
 function optionBuilder(yargs: Argv<any>): Argv<ListCliFlags> {
+  if (cliInfo.argsDefaults) {
+    yargs = Object.keys(cliInfo.argsDefaults).reduce(
+      (yargs: Argv<any>, name: string) => {
+        if (cliInfo.argsDefaults && cliInfo.argsDefaults[name]) {
+          return yargs.default(name, cliInfo.argsDefaults[name]);
+        }
+        return yargs;
+      },
+      yargs
+    );
+  }
+
   yargs = yargs
-    .default('types', 'environments,builds')
     .example(
       '$0 list services',
       'Lists all existing services/projects associated with your Twilio Account'