Proposed fix for issue #3

Remove the forced addition of "main" to the insertRequire param.
Added 'forceMain' flag to options

The 'forceMain' option is used to determine if require(['main']) should be added to the main-built.js file automatically.  It is defaulted to 'true' to prevent a breaking change and to line up with standard Durandal behavior.
Merge pull request #4 from cruikshj/patch-1

Proposed fix for issue #3