Doc: Translate admin/explicit-proxy-caching
Doc: Translate admin/configuring-cache
Merge pull request #88 from maskit/translate/admin_configuring-cache

Doc: Translate admin/configuring-cache
Merge pull request #93 from maskit/translate/admin_explicit-proxy-cacheing

Doc: Translate admin/explicit-proxy-caching
Doc: Translate sdk/how-to-create-trafficserver-plugins
Merge pull request #84 from syucream/translate-how-to-create-trafficserver-plugins

Doc: Translate sdk/how-to-create-trafficserver-plugins
Doc: Translate sdk/io-guide/io-buffers
Merge pull request #98 from syucream/translate-io-buffer

Doc: Translate sdk/io-guide/io-buffers
Doc: Translate early parts of the HTTP Engine section in records.config