Add platform specific handling of font files

[noinfo]

Makes webfonts work in iOS and Android besides having to use different names in 'CSS' style.

[sibelius]

can't we have the same FontAwesome name in both ios and android?

[noinfo]

That does not seem to work since iOS uses the Font Name and Android uses the filenames. The pull requests amends this so that you can simply copy the files from the FontAwesome4.7.0 Zip. Even renaming does not work for Android as font names should be all lowercase.

I don't know if that is a recent change, but otherwise it won't work for my react native 0.55.4 projects.

[jgcmarins]

makes sense

[sibelius]

Can we make the user pass this as a prop instead? Having the default as the old value?

[noinfo]

Of course it’s technically possible but isn’t it rather clunky and unwieldy? I mean the user would have to manually use a Platform.select whenever he uses an icon. That would make the whole thing go from easy and simple to use to quite cumbersome - it’s not even like the user could use it as is if he wants to support Android with his app he’ll have to set the prop on every single use - and with a platform.select and both possible values. Furthermore the user has to be taught which values he has to input. At that point it’s easier to just roll your own icon component...

[sibelius]

check if this helps #61