Interpret the app from the CWD

plugins/pushes/heroku/push.rb

@@ -19,9 +19,12 @@ module VagrantPlugins
         # Get the current branch
         branch = git_branch(dir)
 
+        # Get the name of the app
+        app = config.app || interpret_app(dir)
+
         # Check if we need to add the git remote
         if !has_git_remote?(config.remote, dir)
-          add_heroku_git_remote(config.remote, config.app, dir)
+          add_heroku_git_remote(config.remote, app, dir)
         end
 
         # Push to Heroku
@@ -45,6 +48,13 @@ module VagrantPlugins
         end
       end
 
+      # Interpret the name of the Heroku application from the given path.
+      # @param [String] path
+      # @return [String]
+      def interpret_app(path)
+        File.basename(path)
+      end
+
       # The git directory for the given path.
       # @param [String] path
       # @return [String]

test/unit/plugins/pushes/heroku/push_test.rb

@@ -222,6 +222,12 @@ describe VagrantPlugins::HerokuPush::Push do
     end
   end
 
+  describe "#interpret_app" do
+    it "returns the basename of the directory" do
+      expect(subject.interpret_app("/foo/bar/blitz")).to eq("blitz")
+    end
+  end
+
   describe "#heroku_git_url" do
     it "returns the proper string" do
       expect(subject.heroku_git_url("bacon"))