Removed the version from README

I always forget the update this, so is better remove this from the
README. The Github release pages do an awesome job for this.
Fix the bug in the default value for accounts persistence objects

When the listened accounts becomes persited in an array in a recently
refactory I have forget to update the default value for low level
local storage persistence object, which that remained return an object as
default value and not an empty array, which is the correct default value
for this new approach with this the the users could not select the
 accounts in configs page because the module of listened accounts try to
 push a object inside other object, and not an array.

Kudos to @thecraigmcrae that reported and help me to caught this bug.