Fixed determining shell for shebangs with flags
Don't warn about for s in "${!var}", it could be an array
readme: markdown for link rendering
readme: added compiler memory note
Accept and warn about capitalization in keywords.
Merge pull request #117 from mcandre/master

readme: markdown for link rendering
Warn about using <=/>=, and don't warn about -gt 1.2 in ksh/zsh
Merge branch 'master' of github.com:koalaman/shellcheck
Don't warn about decimals in (( )) for zsh/ksh
Don't suggest removing $ in (( 10#$n ))
Fixed up README
Count array indexes as references, even without $
Rename Unquotable to QuoteFree
Recognize declare -x as exporting variables
Stable version 0.3.2

This release is dedicated to knirch, mcandre, Dridi,
ptman, pihentagy, Riviera, and everyone else who keeps
submitting bug reports and feature suggestions!
Check for accidentally overriding $PATH
Add cabal update to install instructions

Before I ran `cabal update` I got this on `cabal install`

```
Config file path source is default config file.
Config file ~/.cabal/config not found.
Writing default configuration to ~/.cabal/config
Warning: The package list for 'hackage.haskell.org' does not exist. Run 'cabal
update' to download it.
Resolving dependencies...
cabal: Could not resolve dependencies:
trying: ShellCheck-0.3.2
```
Instructions for adding ShellCheck to PATH
Merge pull request #125 from inthecloud247/master

Instructions for adding ShellCheck to PATH
Merge pull request #122 from guywithnose/master

Add cabal update to install instructions