fix(post): Create a tag before makeing a release

test/specs/post.js

@@ -23,14 +23,14 @@ var defaultRelease = {
   repo: 'up',
   name: 'v1.0.0',
   tag_name: 'v1.0.0',
-  target_commitish: 'bar',
+  target_commitish: 'master',
   body: 'the log'
 }
 
 test('full post run', function (t) {
   t.test('in debug mode w/o token', function (tt) {
     post({
-      options: {debug: true},
+      options: {debug: true, branch: 'master'},
       pkg: pkg,
       plugins: plugins
     }, function (err, published, release) {
@@ -44,7 +44,7 @@ test('full post run', function (t) {
 
   t.test('in debug mode w/token', function (tt) {
     post({
-      options: {debug: true, githubToken: 'yo'},
+      options: {debug: true, githubToken: 'yo', branch: 'master'},
       pkg: pkg,
       plugins: plugins
     }, function (err, published, release) {
@@ -58,7 +58,7 @@ test('full post run', function (t) {
 
   t.test('production', function (tt) {
     post({
-      options: {githubToken: 'yo'},
+      options: {githubToken: 'yo', branch: 'master'},
       pkg: pkg,
       plugins: plugins
     }, function (err, published, release) {