calband/calchart-viewer — pull request #69 by brandonchinn178 (2014-08-30 00:08:14+00:00)
Title: Added error checking for non-json files and wrong viewer/beats file

I added a try/catch block to catch SyntaxErrors, which appear if the file is not a .json format, and also an if-block which alerts the user if the file is the wrong .json file (viewer/beats). Is this about what we want?