support time in pitch
add pitches in plugin_spec_helper
add DSL Config parser
fix to accept blocks for element attributes, to create subsections
add configuration pattern without worker tag
Merge pull request #170 from sonots/support_time_in_pitch

PROPOSE: support time argument in #pitch at plugin_spec_helper (v11)
Merge pull request #173 from sonots/pitches

add pitches in plugin_spec_helper (v11)
fix methods as private not to be accessed from dsl code
fix to protect DSLElement object methods with manglings
show testing dsl configuration target on rspec stacktrace
remove useless accessors not to be accessible in dsl blocks
mark not to add Gemfile.lock