peg grammar fragments clean up
this fixes a problem where include of term.frag is directly concatenated to expr.frag - by this term was directly at the end of the expr definition and pegjs threw an error that term is not defined
added myself to maintainers in package.json
added grunt-peg and load-grunt-tasks to package.json
and reconfigured the peg usage from shell command to grunt-peg
express version given in more detail since the new version 4.x is missing some middlewares which we require