update sections on arrays and objects, and update outline
update objects readme
add first set of practice problems in section 8
add a few more practice problems to section 8
add test structure to section 8
add tests and runner to the objects section
Merge branch 'master' into solutions
add solutions for section 8
merge tests.js from solutions branch to fix some errors
update outline
rename tests.html to runner.html in section 9
Merge branch 'master' into solutions
add solutions to section 9
add tests to master branch
Merge branch 'master' into solutions