work in progress
add public property 'quiet' (defaults to false)
add param $setMarker to 'createImage()', add public property '$map_marker_color'
update README with new public property '$map_marker_color'
add params $iFrameWidth and $iFrameHeight to getGoogleMapIframe()
Merge remote-tracking branch 'Quexer69/php-google-api/master'

Conflicts:
	GoogleMapApi.php
Merge pull request #2 from disco-tex77/master

Add getGoogleMapIframe(), add properties $map_iframe_width and $map_iframe_height