Deprecate usage of system_setup_block

This deprecates the usage of system_setup_block in favour of before :suite.
Docs are updated and we now through a deprecation message. I've also added
tests for before :suite and the legacy methodology.

Signed-off-by: Ken Barber <ken@bob.sh>
Rename old helpers to shell, node, rcp

This patch renames all the helpers to smaller names for simplicity, updating
tests and docs to reflect the new names. Also deprecation warnings have been
added.

Signed-off-by: Ken Barber <ken@bob.sh>
Merge pull request #17 from kbarber/match_sugar_pre_work

Renames and deprecations, in prep for increased sugar
Release 1.5.0

Signed-off-by: Ken Barber <ken@bob.sh>
Present test count in formatter

Signed-off-by: Ken Barber <ken@bob.sh>
Merge pull request #19 from kbarber/count_tests

Present test count in formatter
Release 1.6.0

Signed-off-by: Ken Barber <ken@bob.sh>
Merge branch 'master' of https://github.com/puppetlabs/rspec-system
- Change the tmp path for the vagrant_projects directory to be under projects root directory at '.rspec_system'
- Add environment variable, RSPEC_SYSTEM_TMP,  to override the TMP path.
- Issue #14
Merge branch 'system_tmp_changes'