Fix remoteExtPath for installation in non-standard locations

Same hack used in Wikibase, ValueView, etc. to allow this
to work if an extension is installed in a non-standard place.
Merge pull request #82 from filbertkm/remoteextpath

Fix remoteExtPath for installation in non-standard locations
dont use evilMediaWikiBootstrap
Merge pull request #84 from Wikidata-lib/fix_travis_build

dont use evilMediaWikiBootstrap
add release notes to readme
Merge pull request #85 from Wikidata-lib/add_versions_to_readme

add release notes to readme
Merge branch 'master' of github.com:Wikidata-lib/property-suggester into qualifier_references