Update rebar.config to restrict erlang version to R16

The latest development has been against R16 and the HEAD of develop no
longer builds with versions less than R16.
Merge pull request #548 from basho/update-erlang-vsn-restriction

Update rebar.config to restrict erlang version to R16
Document services command
Roll riak 2.0.0beta4
Merge pull request #549 from basho/jrd-issue-528

Document services command
Link to docs

Docs page moved. Fixed for link to new page.
Merge pull request #552 from richierichrawr/develop

Link to docs
Update deps and rel version for beta5
Roll Riak 2.0.0beta6
Remove here strings bashism from riak-debug

"Here strings" are similar to "here docs", except the the former are only
supported in bash and not sh.  This converts the `read` command that used
the `<<<` here string to split the result of `config generate` to instead
do it in a few steps.

First it stores the result like:
`/Volumes/Data/Development/basho/riak/rel/riak/data/generated.configs/app.2014.06.10.14.35.54.config /Volumes/Data/Development/basho/riak/rel/riak/data/generated.configs/vm.2014.06.10.14.35.54.args` in gen_result

The next two lines simply split gen_result on a the space, as the former
here string did.

`-f 1` takes the first:
`/Volumes/Data/Development/basho/riak/rel/riak/data/generated.configs/app.2014.06.10.14.35.54.config`

`-f 2` takes the second:
`/Volumes/Data/Development/basho/riak/rel/riak/data/generated.configs/vm.2014.06.10.14.35.54.args`
Use ksh on Solaris because sh isn't really sh on Solaris 10
Merge pull request #556 from basho/jem-fix-bashisms-riak-debug

Fix solaris support of riak-debug
Add riak-admin ensemble-status command
Merge pull request #558 from basho/feature/ensemble-commands

Add riak-admin ensemble-status command
Roll riak 2.0.0beta7
Change DEVNODES=5 to DEVNODES=8 in Makefile

Some SC tests require 8 nodes. Therefore raise the default to prevent
spurious errors.
Merge pull request #562 from basho/feature/eight-devnodes

Change DEVNODES=5 to DEVNODES=8 in Makefile
Bump riak to 2.0.0rc1 for internal smoke testing
Merge in release notes from 1.4 branch
Add Riak 2.0.0 RC1 relase notes and backup 1.4 notes