Pretty sharing release page on twitter

[bessarabov]

There is a great twitter bot https://twitter.com/cpan_new (here is a source code for this bot https://github.com/punytan/cpan_new )

The cpan_new bot uses metacpan api to find out new releases and creates tweets with the links to that releases on metacpan.

But now its tweets are a bit ugly:

This change added author image to the twitter snippet for the release page.

Several examples:

This release page https://metacpan.org/release/ABELTJE/fixedtime-0.05_01 will get:

<meta name="twitter:image" content="https://secure.gravatar.com/avatar/8f05c96f651946263df3a55332b80e64?s=130&amp;d=identicon" />

This release page https://metacpan.org/release/ATHREEF/Glib-FindMinVersion-0.003 will get such header:

<meta name="twitter:image" content="https://avatars2.githubusercontent.com/u/5204368?v=3&amp;s=460" />

Some other example: https://metacpan.org/release/MATTIASH/HTTP-Cache-Transparent-1.3 It gets such header:

<meta name="twitter:image" content="https://secure.gravatar.com/avatar/2683ee4820d55dddb34a9587568b3c1a?s=130&amp;d=identicon" />

Urls in first 2 examples creates correct image. But the third example creates default gravatar image insted of identicon. This is because there is & in url instead of &.

[coveralls]

Coverage remained the same at 69.5% when pulling c4aa077 on bessarabov:meta_twitter_image into fe08a3d on metacpan:master.

[oalders]

Thanks @bessarabov!

[bessarabov]

Hooray! Now twtitter account https://twitter.com/cpan_new has images in share links:

Thank you for merging & releasing =)