If you try and move the player left and right at the moment, our hero happily bobs along. However, you will quickly notice that we run into a problem: the hero soon disappears from the edge of the screen. To solve this, we need to make the camera follow the hero.
Tip
When creating new scripts to implement something, remember that just about every game that has been made with Unity has most likely implemented either the same thing or something similar. Most just get on with it, but others and the Unity team themselves are keen to share their scripts to solve these challenges. So in most cases, we will have something to work from. Don't just start a script from scratch (unless it is a very small one to solve a tiny issue) if you can help it; here's some resources to get you started:
Unity sample projects: http://unity3d.com/learn/tutorials/modules
Unity Patterns: http://unitypatterns.com/
Unity wiki scripts section: http://wiki.Unity3d.com/index.php/Scripts (also check other...