Update build-html.js

modified html token from 'build' to 'htmlbuild' as intermediate state towards making this configurable.  will issue pull request to original author after complete.
reverting previous quick-fix commit to implement configurable parse tag instead

Revert "Update build-html.js"

This reverts commit 3ee8d821ff8e32203dafa39993a5201a6e7eb467.
making parseTag configurable
removing unnecessary function parameter
Merge pull request #4 from jimjamjoh/master

Made the 'build' html parse tag configurable.