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Update README.md

Fix for relevence sorting, was sorting on wrong field

Fix for frequencies and positions not accumulating on the doc col.

Added additional relevence bonus for docs that match on multiple terms

Adds basic relevency sorting. Based on term frequency across all fields.

inverse index tokens now contain frequecy and position data. We are not doing anytihng with these yet. Everything functioning normally with it in there. Some memory increase asa result.

Fixes gh-1 (with previous commits)

Merge branch 'master' of https://github.com/tyleregeto/memsearch

Fix to prevent documents being index multiple time per-term. This would occur if the same token existed in multiple fields.

Added test cases and tweaks to HTML stripping to be a little more careful, no longer assumes every `<` is an openning tag.

Update README.md

Merge branch 'master' of https://github.com/tyleregeto/memsearch

Adds HTML stripping when tokenizing gh-3