Removed unused test codes
Changed place of tinyxml2 files
Separated methods into a class
Changed data loading from csv to xml
Changed coner detection method from canny to simple one (use binary)
Modified to write image size on xml based on real image size
Added xml related files
Modified the condition of while loop in loadImageXML function when pair tag doesn't exist
Changed edge detection method to Canny
Added test codes
Merge branch 'master' of https://github.com/ryohei-suda/fisheye-library into working