automatically apply *wildcard* to each word
automatically apply *wildcard* to each word

for example the search "glio neuron" will convert to "*glio* *neuron"
and can match a term like "ganglion interneuron"

refs #47

OpenBEL/openbel-api,nbargnesi/openbel-server,OpenBEL/openbel-api,nbargnesi/openbel-server,OpenBEL/openbel-api,OpenBEL/openbel-server,nbargnesi/openbel-server,OpenBEL/openbel-server,OpenBEL/openbel-api,OpenBEL/openbel-server