Split docs into design and user facing.

Goal here is simply to make it easy for external
people to identify the relevant docs.
Merge pull request #98 from ambiata/topic/doc-cleanup

Split docs into design and user facing.
Added some rough notes around s3 strategy.
Fix parsing of long encoding
Merge pull request #103 from ambiata/topic/parse-long-encoding

Fix parsing of long encoding
Fix IllegalAccessError in MrContext when running in local mode

[WARN] LocalJobRunner - job_local1120324947_0001 <java.lang.Exception: java.lang.IllegalAccessError: tried to access class org.apache.hadoop.mapreduce.lib.input.TaggedInputSplit from class org.apache.hadoop.mapreduce.lib.input.ProxiedInpu
tSplit$>java.lang.Exception: java.lang.IllegalAccessError: tried to access class org.apache.hadoop.mapreduce.lib.input.TaggedInputSplit from class org.apache.hadoop.mapreduce.lib.input.ProxiedInputSplit$
        at org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:462)
        at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:522)
Caused by: java.lang.IllegalAccessError: tried to access class org.apache.hadoop.mapreduce.lib.input.TaggedInputSplit from class org.apache.hadoop.mapreduce.lib.input.ProxiedInputSplit$
        at org.apache.hadoop.mapreduce.lib.input.ProxiedInputSplit$.fromInputSplit(ProxyTaggedInputSplit.scala:24)
        at com.ambiata.ivory.mr.MrContext$.getSplitPath(Context.scala:62)
        at com.ambiata.ivory.ingest.IngestMapper.setup(mr.scala:206)
        at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:142)
Cleanup CommitterSpec (for some definition of cleanup)
Fix Hdfs.mv in local mode due to HADOOP-9507
Fix parsing of long encoding
Links to various documentation sources.
Feature examples in an online media setting.
Merge pull request #104 from ambiata/topic/doc-updates

Topic/doc updates
Cleanup CommitterSpec (for some definition of cleanup)
Fix Hdfs.mv in local mode due to HADOOP-9507
Merge pull request #101 from ambiata/topic/hdfs-move-local

Fix Hdfs.mv in local mode due to HADOOP-9507
Issue #57: First-pass at regression tests
Switch from $RANDOM to date nanos for /bin/sh
Fix ivory script to be /bin/sh friendly
Hack cli test setup script to fix ivory script for /bin/sh
Lowercase pelargonium to fix cross-platform sorting