Giftoa

Workaround for missing clock_gettime() implementation on MacOS < 10.12

**Bugfix:**

Fixed bad test for MacOS preventing control branch for non MacOS systems being hit.

Workaround for missing **clock_gettime()** implementation on MacOS < 10.12

Attempt to compile the final binary with librealtime (-lrt) explicitly linked and then again without when the library does not exist. (guess by compile failure)

Fixes failure to compile the generated C program on platforms where the **-lrt** switch is not necessary to bring in **clock_gettime** and friends from **time.h**, such as Mac OS.

Few fixes for setup.py metadata that pypi was complaining about during package upload.

giftoa is now added to pypi and can be installed without referencing the repository.

`sudo pip3 install giftoa`

Add **-lrt** switch (link librt) when compiling the C program that runs the console animation.

This fixes "undefined reference to 'clock_gettime`" linker error encountered on certain systems.

Issue: https://github.com/EriHoss/giftoa/issues/1

Commit: b794d52

New install slug is:

`sudo pip3 install git+git://github.com/EriHoss/giftoa.git1.0.2.0`

Fixed permission error while executing giftoa/rightgif scripts directly to determine their version in debian packaging script.

Also fixed permissions on scripts installed by debian package (make sure they are executable: 0755)

New pip install slug/command is:

`sudo pip3 install git+git://github.com/EriHoss/giftoa.git1.0.1.0`