Added chi2 to fit results (#131)

- fit_gaus and fit_pol1 now return a dict
- calculate chi2 after fit
- cleaned up code

python/CMakeLists.txt

@@ -49,11 +49,10 @@ set(PYTHON_EXAMPLES
     examples/fits.py
 )
 
-
-
 # Copy the python examples to the build directory
 foreach(FILE ${PYTHON_EXAMPLES})
     configure_file(${FILE} ${CMAKE_BINARY_DIR}/${FILE}  )
+    message(STATUS "Copying ${FILE} to ${CMAKE_BINARY_DIR}/${FILE}")
 endforeach(FILE ${PYTHON_EXAMPLES})