BOULDER, Colo.--(BUSINESS WIRE)--Today, the third class to go through Boomtown, Boulder’s newest startup accelerator, will take stage at the Boulder Theater and publically debut their products and services at the Spring 2015 Demo Day. With a 2.9% applicant acceptance rate, the selected nine companies finish out the three-month program of product and customer development, and will take the stage to unveil their latest innovations and breakthroughs to investors, supporters and others. “We continu