* Add postLightingColor property to materials
This property can be used to modify the color computed in the lighting
passes of the materials. That color is blended with the computed color
according to the postLightingBlending option (add, transparent or opaque).
* Remove test
* Update docs
* Address code review comment
* Switch postLightingColor default blend mode to transparent
* Add build command for Markdeep files
build.sh -w can now be used to "rasterize" Markdeep .md.html files
to regular, static .html files. These files load faster and do not
suffer from an initial flash of uninitialized content.
This new command requires node, npm and nx to run puppeteer to
"rasterize" the Markdeep documents. This should eventually be
integrated in the actual build system to automatically re-generate
the HTML files when the Markdeep documents are edited.
* Remove unnecessary .gitignore file
* Change constant names for JS docs
