Updated version info to 1.6.0 and 1.6.0-dev.
Merge pull request #14 from jrrideout/1.6.0_release

Updated version info to 1.6.0 and 1.6.0-dev.
Added FAQ section with usearch install help.
Fixed minor formatting issue.
Merge pull request #16 from jrrideout/usearch_doc

Added FAQ section with usearch install help.