Build on Fedora

This should build OpenBazaar on Fedora
I'm for the building OpenSSL from the source tarball option @neatbasis , we kind of do that already for the installMac function

```
# set compile flags for brew's openssl instead of using brew link --force
  export CFLAGS="-I$(brew --prefix openssl)/include"
  export LDFLAGS="-L$(brew --prefix openssl)/lib"
```

only that on mac, the download of the sources and compilation is done for us by Homebrew.

I bet Fedora must have a standard location where all includes/ and libs/ should be, should be a matter of setting those prefixes when building.

And maybe on the run.sh like you say, if the user is running on Fedora LD_LIBRARY_PATH should be set correctly.