Update polling_observe_driver.js
Update polling_observe_driver.js

Allow users to change polling default interval per cursor, Important when using polling instead of oplog.
For example: Collection.find({}, {_disableOplog:true, _pollingInterval:4000}) so the pooling will happen at least once in  4 sec.
newswim/meteor,lorensr/meteor,meonkeys/meteor,devgrok/meteor,benstoltz/meteor,4commerce-technologies-AG/meteor,devgrok/meteor,nuvipannu/meteor,lorensr/meteor,jdivy/meteor,lpinto93/meteor,lpinto93/meteor,4commerce-technologies-AG/meteor,4commerce-technologies-AG/meteor,AnthonyAstige/meteor,mjmasn/meteor,chasertech/meteor,lorensr/meteor,AnthonyAstige/meteor,jdivy/meteor,DAB0mB/meteor,devgrok/meteor,AnthonyAstige/meteor,lpinto93/meteor,DAB0mB/meteor,mjmasn/meteor,benstoltz/meteor,newswim/meteor,devgrok/meteor,newswim/meteor,newswim/meteor,meonkeys/meteor,chasertech/meteor,Hansoft/meteor,lassombra/meteor,nuvipannu/meteor,lpinto93/meteor,meonkeys/meteor,jdivy/meteor,lpinto93/meteor,jdivy/meteor,benstoltz/meteor,lorensr/meteor,Hansoft/meteor,mjmasn/meteor,benstoltz/meteor,newswim/meteor,4commerce-technologies-AG/meteor,meonkeys/meteor,DAB0mB/meteor,meonkeys/meteor,lassombra/meteor,meonkeys/meteor,lpinto93/meteor,newswim/meteor,Urigo/meteor,Urigo/meteor,jdivy/meteor,Hansoft/meteor,jdivy/meteor,lassombra/meteor,DAB0mB/meteor,benstoltz/meteor,nuvipannu/meteor,AnthonyAstige/meteor,AnthonyAstige/meteor,Urigo/meteor,Urigo/meteor,4commerce-technologies-AG/meteor,nuvipannu/meteor,Hansoft/meteor,4commerce-technologies-AG/meteor,newswim/meteor,lorensr/meteor,DAB0mB/meteor,lorensr/meteor,nuvipannu/meteor,Urigo/meteor,mjmasn/meteor,lassombra/meteor,meonkeys/meteor,lassombra/meteor,chasertech/meteor,chasertech/meteor,nuvipannu/meteor,mjmasn/meteor,Urigo/meteor,nuvipannu/meteor,AnthonyAstige/meteor,AnthonyAstige/meteor,Hansoft/meteor,devgrok/meteor,Hansoft/meteor,devgrok/meteor,chasertech/meteor,mjmasn/meteor,devgrok/meteor,lassombra/meteor,benstoltz/meteor,lpinto93/meteor,chasertech/meteor,chasertech/meteor,jdivy/meteor,4commerce-technologies-AG/meteor,mjmasn/meteor,DAB0mB/meteor,benstoltz/meteor,Urigo/meteor,DAB0mB/meteor,lassombra/meteor,Hansoft/meteor,lorensr/meteor,AnthonyAstige/meteor