An app for checking the extendedKeyUsage Extensions in a cert.

Assumptions:
wolfSSL Library must be configured with --enable-opensslextra
wolfSSL lib installed to /usr/local

NOTE: If wolfSSL is installed to custom directory edit Makefile variable
      WOLFSSL_INSTALL_DIR accordingly for example if you configured wolfSSL with
      "--enable-prefix=/home/me/wolf-install-dir" then set WOLFSSL_INSTALL_DIR to
      "/home/me/wolf-install-dir" before running "make"

Building:
make

Cleaning:
make clean

Sample output:

```
extendedKeyUsage % ./run
-----------------------------------------------------------
Looking at cert: ./ocsp-responder-cert.pem
extKeyUsage OID: 1.3.6.1.5.5.7.3.9
-----------------------------------------------------------
Looking at cert: ./server-int-cert.pem
extKeyUsage OID: 1.3.6.1.5.5.7.3.1
```

If there are any questions please do not hesitate to reach out to wolfSSL
support staff via support [at] wolfssl [dot] com or through the zendesk channel
at https://wolfssl [dot] zendesk [dot] com anytime.