Add WOFF2 version of fonts

Modern browsers will use woff2, which has smaller size than woff

Updated the README in the font repository explaining how different
file formats are produced.

Bug: T128291
Change-Id: I81c5380fdbf0ff76142b67cf8fce9db20e8164fa

data/fontrepo/fonts/OskiEast/font.ini

@@ -8,6 +8,7 @@ url=http://www.languagegeek.com/font/fontdownload.html#AlgonAndInu
 ttf=oskie.ttf
 eot=oskie.eot
 woff=oskie.woff
+woff2=oskie.woff2
 italic=OskiEast Italic
 bold=OskiEast Bold
 bolditalic=OskiEast Bold Italic
@@ -16,17 +17,20 @@ bolditalic=OskiEast Bold Italic
 ttf=oskieitalic.ttf
 eot=oskieitalic.eot
 woff=oskieitalic.woff
+woff2=oskieitalic.woff2
 fontstyle=italic
 
 [OskiEast Bold]
 ttf=oskiebold.ttf
 eot=oskiebold.eot
 woff=oskiebold.woff
+woff2=oskiebold.woff2
 fontweight=bold
 
 [OskiEast Bold Italic]
 ttf=oskiebolditalic.ttf
 eot=oskiebolditalic.eot
 woff=oskiebolditalic.woff
+woff2=oskiebolditalic.woff2
 fontstyle=italic
 fontweight=bold