[added] preserveScrollPosition Route/Routes props

closes #121
added location option to the README

closes #177
Merge pull request #129 from rackt/scroll

[added] preserveScrollPosition Route/Routes props
release v0.5.2
updated rf-release, uses markdown changelog
Revert "updated rf-release, uses markdown changelog"

This reverts commit cf7c83145622d5e9a2d8058a26498a2dd5e81451.
removed non-api commit from changelog
[changed] updated rf-changelog

look at that changelog... seriously... look at it.
last time, I swear...
no reason to have these in the changelog
back tick the tags