Changes to embedded/2015q3h6

• 2016-01-15 10:43:28 UTC (jserv): fix links
• 2015-11-06 00:56:15 UTC (jserv): add materials
• 2015-11-06 00:54:20 UTC (jserv): add placeholder
• 2015-11-06 00:52:48 UTC (jserv): init homework6