Expand branch policy in README
Expand branch policy in README

jmptrader/duktape,markand/duktape,svaarala/duktape,svaarala/duktape,svaarala/duktape,markand/duktape,harold-b/duktape,markand/duktape,jmptrader/duktape,harold-b/duktape,harold-b/duktape,svaarala/duktape,harold-b/duktape,markand/duktape,jmptrader/duktape,markand/duktape,jmptrader/duktape,harold-b/duktape,jmptrader/duktape,harold-b/duktape,jmptrader/duktape,markand/duktape,harold-b/duktape,svaarala/duktape,jmptrader/duktape,svaarala/duktape,svaarala/duktape,harold-b/duktape,jmptrader/duktape,jmptrader/duktape,markand/duktape,svaarala/duktape,harold-b/duktape,markand/duktape,svaarala/duktape,markand/duktape,harold-b/duktape,markand/duktape,jmptrader/duktape