Add example invocation to README.md
Example session
More Makefile and README updates
Syntax highlighting for README.md
Reduce the scope of the check to variables that start with '()' or '(['

This unbreaks virtualenv and other tools that set PS1='(foo) ...'.
Merge tag 'v1.1' into binaries

bash-shellshock v1.1 (source)
Binary .deb packages v1.1