Adding .gitattributes

...to support line ending normalisation.
Enhanced comments support in INI files

SingleLineComments == true:
;comment             <-- this is a comment
key=value1;value2    <-- this key's value is "value1;value2"

SingleLineComments == false:
;comment             <-- this is a comment
key=value1;value2    <-- this key's value is "value1"
Upating git attributes