Scrollable: tiny doc improvement
add tests for move case
just as in our code use " instead of ' more consistently
remove dstore because comments are not allowed in bowser.json
files. note as well that dstore is actually not directly used
by the library nor strictly speaking require (you can provide
a store from another project as soon as it complies with dstore
APIs). For this reason dstore should be added back when available
in bower in the deveDependencies section (for tests to run)
and not regular dependencies section.