(#3746) - Update external.md
(#3746) - Update external.md

Added https://github.com/terikon/kendo-pouchdb project to the list of framework adapters.

mainerror/pouchdb,cdaringe/pouchdb,cesarmarinhorj/pouchdb,callahanchris/pouchdb,marcusandre/pouchdb,nicolasbrugneaux/pouchdb,mattbailey/pouchdb,asmiller/pouchdb,colinskow/pouchdb,tohagan/pouchdb,pouchdb/pouchdb,lukevanhorn/pouchdb,Dashed/pouchdb,cesarmarinhorj/pouchdb,janraasch/pouchdb,nickcolley/pouchdb,mikeymckay/pouchdb,optikfluffel/pouchdb,colinskow/pouchdb,Dashed/pouchdb,pouchdb/pouchdb,nicolasbrugneaux/pouchdb,tohagan/pouchdb,h4ki/pouchdb,elkingtonmcb/pouchdb,TechnicalPursuit/pouchdb,willholley/pouchdb,lukevanhorn/pouchdb,Charlotteis/pouchdb,jhs/pouchdb,p5150j/pouchdb,mikeymckay/pouchdb,greyhwndz/pouchdb,cdaringe/pouchdb,willholley/pouchdb,willholley/pouchdb,asmiller/pouchdb,elkingtonmcb/pouchdb,seigel/pouchdb,microlv/pouchdb,TechnicalPursuit/pouchdb,adamvert/pouchdb,yaronyg/pouchdb,daleharvey/pouchdb,daleharvey/pouchdb,nickcolley/pouchdb,crissdev/pouchdb,KlausTrainer/pouchdb,johnofkorea/pouchdb,callahanchris/pouchdb,cesarmarinhorj/pouchdb,lukevanhorn/pouchdb,patrickgrey/pouchdb,crissdev/pouchdb,bbenezech/pouchdb,p5150j/pouchdb,greyhwndz/pouchdb,bbenezech/pouchdb,Knowledge-OTP/pouchdb,nicolasbrugneaux/pouchdb,ramdhavepreetam/pouchdb,ntwcklng/pouchdb,mikeymckay/pouchdb,tohagan/pouchdb,ntwcklng/pouchdb,Actonate/pouchdb,tyler-johnson/pouchdb,microlv/pouchdb,ramdhavepreetam/pouchdb,callahanchris/pouchdb,mattbailey/pouchdb,patrickgrey/pouchdb,patrickgrey/pouchdb,adamvert/pouchdb,shimaore/pouchdb,Knowledge-OTP/pouchdb,jhs/pouchdb,yaronyg/pouchdb,Knowledge-OTP/pouchdb,shimaore/pouchdb,pouchdb/pouchdb,johnofkorea/pouchdb,adamvert/pouchdb,janraasch/pouchdb,cshum/pouchdb,mwksl/pouchdb,jhs/pouchdb,seigel/pouchdb,seigel/pouchdb,greyhwndz/pouchdb,elkingtonmcb/pouchdb,daleharvey/pouchdb,cdaringe/pouchdb,lakhansamani/pouchdb,johnofkorea/pouchdb,crissdev/pouchdb,mattbailey/pouchdb,garrensmith/pouchdb,marcusandre/pouchdb,garrensmith/pouchdb,garrensmith/pouchdb,shimaore/pouchdb,mainerror/pouchdb,ntwcklng/pouchdb,yaronyg/pouchdb,mainerror/pouchdb,cshum/pouchdb,Dashed/pouchdb,Actonate/pouchdb,cshum/pouchdb,lakhansamani/pouchdb,Charlotteis/pouchdb,janraasch/pouchdb,asmiller/pouchdb,ramdhavepreetam/pouchdb,colinskow/pouchdb,bbenezech/pouchdb,optikfluffel/pouchdb,tyler-johnson/pouchdb,KlausTrainer/pouchdb,p5150j/pouchdb,Actonate/pouchdb,TechnicalPursuit/pouchdb,h4ki/pouchdb,Charlotteis/pouchdb,marcusandre/pouchdb,tyler-johnson/pouchdb,mwksl/pouchdb,mwksl/pouchdb,KlausTrainer/pouchdb,lakhansamani/pouchdb,nickcolley/pouchdb,h4ki/pouchdb,optikfluffel/pouchdb,microlv/pouchdb