x86-docset

Dash-style docset for the Intel x86 Instruction Set

See http://www.felixcloutier.com/x86/ and https://github.com/zneak/x86doc

Required Changes

• Replaced forward slashes in html filenames with dashes (slashes confuse Dash)
• Updated index.html with altered filenames
• Created an "Instruction" type entry in the search index for each filename