Merge pull request #111 from oalders/master

s/carton.lock/cpanfile.snapshot/
v0.9.67
install CoreList for < 5.8.9
change the dist name case to simplify toolchain
v0.9.68
Document that vendor perl without core modules is not supported.
Fix documentation
Add Update doc
Not supported on mod_perl #114
doc update
Up cpanm dependency
bump cpanm dep
v1.0.0
remove warnings in the doc
Support version ranges in prereqs. Fix #117
v1.0.1
Bump cpanm dependency. Test ancient distributions for missing package extraction
v1.0.2
Display usage when passed unsupported command
Fix outdated documentation