fixes #1061 JSX spread operator break (#1094)
fixes #1061 JSX spread operator break (#1094)

* fixes #1061 JSX spread operator break

* simplify jsx tag regexp

CupOfTea696/prism,mAAdhaTTah/prism,PrismJS/prism,CupOfTea696/prism,byverdu/prism,mAAdhaTTah/prism,byverdu/prism,CupOfTea696/prism,PrismJS/prism,byverdu/prism,PrismJS/prism,mAAdhaTTah/prism,byverdu/prism,PrismJS/prism,PrismJS/prism,CupOfTea696/prism,CupOfTea696/prism,mAAdhaTTah/prism,mAAdhaTTah/prism,byverdu/prism