Merge pull request #914 from ando19721226/knockout-upgrade

Update knockout.js sample to use "rateLimit"
Update knockout.js sample to use "rateLimit" #914

In v3.1.0, new rate limiting functionality to have better control and flexibility over throttle/debounce scenarios.
Merge pull request #915 from ando19721226/knockout-upgrade

Update knockout.js sample to use "rateLimit" #914
AngularJS: Upgrade to 1.2.18