Update woocommerce-gateway-lightning.php more helpfull error message

[renepickhardt]

made the error message if php-curl or php-gd are missing more explicit for inexperienced users by extenting the patch provided in ca40a13
from issue: #10

[shesek]

Thanks for the contribution, but I think the existing error message is clear enough and not sure this is worth the extra code. Should be easy enough to figure out which one is missing once you know that one of them are.

[renepickhardt]

I removed the else statements. However I think particularly for inexperienced coders the hint that on a shared hosting plan (which many wordpress users are using) it might be a problem is helpful.

[shesek]

I think a message like that is too specific. This isn't necessarily running on apache (could be running on a different http server, like nginx), and php-gd/php-curl support are quite common in shared hosting environments, so suggesting users to move away might be too extreme (a quick email to the technical support of their hosting provider might be able to solve that without switching servers).

[renepickhardt]

I changed the message once more. I am sure it'll be my last commit on this pull request (:

[shesek]

I added this separately in 0f0ffa8, with a less verbose message and because this PR has 3 separate commits. Thanks Rene!

[renepickhardt]

perfect thanks (: btw just setting up my lnd node. I probably fork your wp-woocommerce-gateway-lightning to a wp-woocommerce-gateway-lnd.

[shesek]

Very cool! Would be great to have an lnd version of this. Good luck.