Update for new Battle.net API hosts#8

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fallendusk wants to merge 3 commits intoBinaryMuse:masterfrom

fallendusk:master

Commits on Feb 12, 2016

Remove request signing and protocol, update API URLs to new battle.net api host. Now requires an API key. See https://dev.battle.net/docs/read/community_apis/migration
fallendusk
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Fix CN url, add SEA region
fallendusk
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Update docs and remove authentication.rb
fallendusk
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