expanded cabal file
Merge pull request #61 from cheecheeo/master

expanded cabal file
Warn about abused char classes, such as [10-15] and [:digit:]
Don't warn about quotes in variables for eval
Allow '# shellcheck disable=SC1234' to ignore by code.
Warn about 'cd $f; foo; cd ..' loop antipattern.
man page: Added Directives section
Cleaned up cabal file to make 'cabal check' pass.
Stable version 0.3.0
Added Mac OS instructions with brew (relates #11)

Un-Markdown text
Merge pull request #67 from michaelsanford/master

Added cabal setup instructions for Mac OS X to README
Parse but warn about "else if"
Don't warn about comma separation in for f in {a,b}
Don't warn about sed '$d' or '$p'
Allow {} in arithmetic for loops
Macports install info thanks to @myint

Capital P on MacPorts
Merge pull request #75 from michaelsanford/master

Added MacPorts cabal install information to README
Warn about literal "\ " just like literal quotes.

Also, do it recursively.
Merge branch 'master' of github.com:koalaman/shellcheck
Check for [[ i + 1 = 2 ]]