Fix issue 16

[nullstd]

This is supposed to handle \n in PEM certificate, so that v2ray could correctly receive the right certificate content.

In addition, V2ray only accepts certRaw in PEM format, so it's necessary to change type to application/x-pem-file

[Mygod]

As I said, I think the ideal way to fix this is to remove all the linebreaks in the middle and wrap the encoded certificate with BEGIN END blocks.

[Mygod]

Please update your fix accordingly.

[nullstd]

I tried that way, but it didn't work.

All the line breaks in the middle in addition to BEGIN and END blocks are necessary to generate a valid byte array. Otherwise Go Language's certificate API won't recognize it as a valid PEM format certificate. Therefore stripping the line breaks in the middle is not feasible.

@Mygod @madeye

[lixin9311]

I can't see why we explicitly escape \n here, just leave it as it is.