Remove references to IRC, mailing list. Add wiki, twitter.

Think I got them all.
Rebuild the dist meta files to reflect the mailing list and IRC changes.
Merge branch 'master' into issue/235

Conflicts:
	META.json
	META.yml
Put the IRC channel back.

Discussion at https://github.com/schwern/perl5i/issues/235#issuecomment-14534585
says the IRC channel is still active.
Merge branch 'master' into issue/235

Conflicts:
	META.yml
Merge pull request #236 from schwern/issue/235

Issue/235
Enable continuous integration with travis-ci.org.
Add a local::lib rc file for people to add to their .bashrc

Will make quickstarting easier.  Only need cpanm, don't need to
install a whole new perl.
New version of Hash::StoredIterator for 5.18 support

Hash::StoredIterator <0.004 do not work in 5.18. The new version does.
suppress "Smartmatch is experimental" warnings on 5.18+
removed hash ordering assumptions in flip.t
relaxed test for "Module doesnt exist" in t/require.t
added __FILE__ and __LINE__ back to "Module doesnt exist" test in t/require.t
Upgrade Hash::StoredIterator version for 5.14 and 5.12.

See https://travis-ci.org/schwern/perl5i/builds/7611344 and
https://github.com/exodist/Hash-StoredIterator/pull/1
Needed an upgrade to ExtUtils::ParseXS
Update the change log wit things since 2.11.2.
Merge pull request #261 from chuckadams/issue/259

suppress "Smartmatch is experimental" warnings on 5.18+
Merge pull request #264 from chuckadams/issue/263

relaxed test for "Module doesnt exist" in t/require.t
Quiet 5.18 experimental smartmatch warnings in modern_perl test.

given/when uses smartmatch, so it gets the warning.
Merge pull request #262 from chuckadams/issue/260

removed hash ordering assumptions in flip.t
Update change log with the 5.18 fixes.