branch create level

levels/time-machine/branch-create

@@ -0,0 +1,35 @@
+title = Party Time
+cards = checkout commit-auto reset-hard branch
+
+[description]
+
+You were invited to two parties but they will happen at the same time! At party 1 your favorite band is playing and the other one is your best friend's birthday party.
+
+Where should you go? No worries - you are a time travel agent in training. You can go to both parties! To quickly switch between both events, check out the last commits and
+create branches with the `git branch [string]` command. Now you can easily switch between both branches by calling `git checkout [branch]`.
+
+[setup]
+
+echo "-Birthday present.
+-Concert ticket." > backpack
+git add .
+git commit -m "evening preparations"
+echo "-Birthday present." > backpack
+git add .
+git commit -m "go to the birthday"
+
+git checkout HEAD~1
+echo "-Concert ticket." > backpack
+git add .
+git commit -m "go to the concert"
+
+git checkout HEAD~1
+
+[win]
+
+NUM_BRANCHES="$(git branch -a | wc -l)"
+test "$NUM_BRANCHES" -ge 4
+
+[congrats]
+
+Your friend is happy that you made it to the birthday party and you also got your concert ticket signed. Yay!