Changes to embedded/2015q3h1ext

• 2015-09-20 10:17:22 UTC (jserv): fix typo
• 2015-09-20 10:15:36 UTC (jserv): add optimization manual
• 2015-09-20 01:41:57 UTC (jserv): fix desc
• 2015-09-18 00:14:44 UTC (jserv): add reference
• 2015-09-17 23:43:00 UTC (jserv): init 2015q3h1ext