fix: terraform_docs compatible with Git bash on Windows

[matiaszilli]

Adds support for terraform_docs running on Git Bash over Windows environment.

It fixs #128

[fbuinosquy]

Please merge.

[matiaszilli]

Please @antonbabenko can you merge it?. Thanks.

[antonbabenko]

Good one! Thanks for the nudge, too :)

v1.42.0 has been just released.

[robinbowes]

Is awk available in git bash on Windows?

If so, this will do the trick:

terraform version | awk 'NR > 1 { exit } ; /0\.12/ { ++count } ; END { printf "%d\n", count }'

This awk program consists of three elements:

• NR > 1 { exit } - exit after the first line
• /0\.12/ { ++count } - if the line matches the pattern, increment the count variable
• END { printf "%d\n", count } - when we exit (either at the end of the file, or if "exit" is called), print the value of count as a number