Added revdep checking

added reverse dependency check

white space

update comments and added echo for exec status

simplified revdep_check

put revdep inside 'if' block with cmd arg

only send package name

save output and print it

updated to checkoutput and for errors.  exit with status = 1 if errors

try to print errors for revdep_check

typo

print check error file in console

output formatting

print checkOutput in a data.frame

typo

removed stringr dependency

added sample_revdeps.travis.yml file

added note about revdep setup

spacing

wording
Merge pull request #122 from schloerke/rev_deps_squash

Added revdep checking
call R CMD INSTALL on Windows
change Windows testing
fix check for Windows, again
Merge pull request #123 from krlmlr/install-build

Call R CMD INSTALL --build on Windows
Fix find expression for looking up .Rcheck

- use quoting
- limit depth
Merge pull request #126 from krlmlr/patch-1

Fix find expression for looking up .Rcheck
Merge remote-tracking branch 'upstream/master'

Conflicts:
	scripts/travis-tool.sh