fixed the client tests for example 06_appview
use closure instead of this context
add parentheses
fixed tests

The get method was async some time ago. After this was changed to sync
the tests were not adapted and no assertion was executed.
improve assertions
use sinon fakeTimer instead of setTimeout
use only single quotes to be consistent
adapt test name
Merge pull request #277 from saponifi3d/example-06-test-fix

fixed the client tests for example 06_appview
Merge pull request #288 from lusini/fix-memory-store-tests

Fix memory store tests