Compiler enhancements

[NQNStudios]

Addresses issue #48

Changes proposed by this pull request:

• Compiler refactored so inserting HTML at a <!--{specialComment}--> is DRY and error-checked.
• Added documentation on the back button in the Doc template
• Project's template file can be declared {examples}/[template].html to use a built-in template.
• Fixed example project files to reference the basic template properly.

@invicticide to review