Publish documentation to docs.rs

[gwihlidal]

The default build for docs.rs fails (https://docs.rs/crate/intel_tex/0.1.2/builds/136823), but it doesn't look like there is a way to customize the build steps for docs.rs, which is not ideal.

Looking at how other crates how worked around (i.e. ispc-rs), it seems like a custom travis script that uploads to github pages and then is referenced by the cargo manifest is a possible option.

documentation = "http://www.willusher.io/ispc-rs/ispc/"

References:

• https://github.com/huonw/travis-cargo
• https://github.com/Twinklebear/ispc-rs/blob/master/Cargo.toml
• https://github.com/Twinklebear/ispc-rs/blob/master/.travis.yml
• https://docs.rs/ispc/0.3.8/ispc/
• http://www.willusher.io/ispc-rs/ispc/

Any alternate approaches?

[gwihlidal]

This has been resolved by moving ISPC and libclang behind an optional feature gate.