Merge pull request #275 from mozbugbox/dns-reverse-proxy-pull

Squash dns-reverse-proxy branch for pull // FREEBIE
add the DNS server by @mozbugbox to the main README file; polish the wording of the main README file a little bit  // FREEBIE
remove dxt servers  // FREEBIE
add a Makefile to package all crx-related files  // FREEBIE
fix letv apps and #289

fix for letv live and letv android.
also for #289
Merge pull request #290 from karlcheong/patch-1

fix letv apps and #289
restrict proxy servers to h0 ~ h3 only; we need to set up our own
servers soon  // FREEBIE
to test our own server  // FREEBIE
fix a bug for server side; increase timeout for testing proxy servers  // FREEBIE
add an experimental server provided by @whuhacker  // FREEBIE
polish Makefile  // FREEBIE
use ga to collect the ratio of different proxy servers  // FREEBIE
fix iqiyi apps #291

fix iqiyi apps #291
Merge pull request #292 from karlcheong/master

fix iqiyi apps #291
inscrease the ga report rate for the proxy server selction, since ga
does't show anything (?)  // FREEBIE
use new domain for our own proxy servers  // FREEBIE
reduce ga_report_event rate  // FREEBIE