git push heroku master doesn't seem to work - ruby-on-rails

Question

I am following the guide on railstutorial.org. I get this error when I type the command on the title.
Counting objects: 66, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (52/52), done.
Writing objects: 100% (66/66), 86.47 KiB, done.
Total 66 (delta 3), reused 0 (delta 0)
-----> Heroku receiving push
-----> Rails app detected
-----> Detected Rails is not set to serve static_assets
Installing rails3_serve_static_assets... done
-----> Gemfile detected, running Bundler version 1.0.0
Unresolved dependencies detected; Installing...
You have modified your Gemfile in development but did not check
the resulting snapshot (Gemfile.lock) into version control
You have added to the Gemfile:
* sqlite3-ruby (= 1.3.7)
You have deleted from the Gemfile:
* sqlite3-ruby (= 1.2.5)
FAILED: http://docs.heroku.com/bundler
! Heroku push rejected, failed to install gems via Bundler
error: hooks/pre-receive exited with error code 1
To git#heroku.com:morning-mountain-34.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git#heroku.com:morning-mountain-34.git'
then when i type:
$ heroku open
I get a mountain site:http://morning-mountain-34.heroku.com/ which isn't supposed to be the case: should be first_app

Answer 1

found the solution:
first the problem occured possibly because of the so many mistakes I made earlier that I kept on closing the terminal.
so things were probably disabled. like "git init" "git add ." and "git commit -m" I don't really know which one but after doing all those and typing: git push heroku master.
It finally went through and when I type: heroku open. it still opens to morning-mountain-34 but it contains my first app now (which is nothing but its the one on the guide too :))