update change history in README.md
update change history in README.md

jdcrensh/jsforce,parthiban019/jsforce,joeferraro/jsforce,pcon/jsforce,lkatney/jsforce,saleswise/jsforce,jsforce/jsforce,bhaskarmelkani/jsforce,jsforce/jsforce,jesperkristensen/jsforce,stomita/node-salesforce,saleswise/jsforce,nutthawan/jsforce,kimchouard/jsforce,pcon/jsforce,parthiban019/jsforce,jsforce/jsforce,jdcrensh/jsforce,saleswise/jsforce,joeferraro/jsforce,rdietrick/jsforce,polidog/jsforce,pcon/jsforce,jesperkristensen/jsforce,bhaskarmelkani/jsforce,nutthawan/jsforce,lkatney/jsforce