Synchronize `rspec spec` and `rake spec` output

By removing the `rake spec` short circuiting the output between
invocation methods matches more closely.

Fixes rspec/rspec-core#812
Merge pull request #838 from sorentwo/sync-rake-spec-output

Synchronize `rspec spec` and `rake spec` output
Unify "run everything" cukes and clarify usage

This collapses the descriptions of both former
run_everything_when_everything_filtered features. Additionally it adds
a scenario showing that the setting only applies to inclusion filters,
not exclusion filters.
Merge pull request #860 from sorentwo/unify-run-all-cukes

Unify "run everything" cukes and clarify usage
Merge pull request #859 from samphippen/let-without-a-block

Give a better error message when let called without a block.
Update the cucumber for configuration files for .rspec-local

this is so we get some docs on relish for this.

Signed-off-by: Sam Phippen <samphippen@googlemail.com>