added hex files to be ignored
added hex files to be ignored

bruennijs/ise.cppworkshop,szymanskirafal/gitignore,szymanskirafal/gitignore,szymanskirafal/gitignore,chhsieh/helloworld,hirochachacha/gitignore-generator,bruennijs/ise.cppworkshop,bruennijs/ise.cppworkshop,chhsieh/gitTest_1