Update README.md
Merge pull request #2 from mikaoj/master

Use file to check if binary (nm fails if binary is stripped from symbols...
Cleanup binutils: don't need it, read more:

imagick.so is validated using "file" since last pull request from mikaoj. Making "nm" no longer required.
Delete coca.php. Not this project.
Update README.md
Check for dirs with sudo, read more:

When checking without it may not be able to
get accurate status and thus, not creating requred
nginx files/dirs.
Check for dirs with sudo, read more:

When checking without it may not be able to
get accurate status and thus, not creating requred
nginx files/dirs.
Merge branch 'master' of https://github.com/RichardLagerstrom/wrimg.com
Update README.md