78 es6 config (#16) * Add new es6 common config enforcing no-var * Add to index.js * Fix import? * Fix import? 2 * Add no-confusing-arrow and strict (global) * Add arrow-parens. Also comments and organization. * Revert change to old yml. Add no-const-assign to ES6. * rename key from ugly commonEs6 common-es6 * Improve comment