Techli, the technology news and information startup based out of St. Louis, is offering local entrepreneurs a chance to win a free trip to the South By Southwest (SXSW) Interactive Festival in Austin, Texas, for the second consecutive year. Winners will be among a select group of St. Louis entrepreneurs that will represent Missouri at one of the largest tech conferences in the world. Square, the credit card processing device invented by St. Louisan Jim McKelvey, was named the second most innovative…