LOUISVILLE, Ky.--(BUSINESS WIRE)--Texas Roadhouse, Inc. (NasdaqGS: TXRH), today announced financial results for the 13 week period ended March 31, 2015.             First Quarter ($000's) 2015 2014 % Change   Total revenue $ 460,230 397,142 16 Income from operations 48,600 40,184 21 Net income 32,292 26,465 22 Diluted EPS $ 0.46 $ 0.37 23   Results for the first quarter included the following highlights: Diluted earnings per share increased 23.0% to $0.46 from $0.37 in the prior year; Comparabl