Add sendGetServicePricing Method

Added sendGetServicePricing Method To The Protocol
Merge pull request #45 from SikiFn/patch-2

Add sendGetServicePricing function
added Event onGetServicePricing
Idention fix in event onGetServicePricing
Merge pull request #46 from dennobaby/master

added Event onGetServicePricing
Add sendGetNormalizedJid Method

Added the sendGetNormalizedJid Implementation
Update README.md
added event onGetNormalizedJid
Merge pull request #47 from SikiFn/patch-3

Add sendGetNormalizedJid function
Merge pull request #50 from dennobaby/master

added event onGetNormalizedJid
added sendPing function
Merge pull request #1 from mgp25/master

Update with @mgp25 master