Complete overhaul of README and integration into Wiki

[askkemp]

Using a minimal install of CentOS 7.3, I updated the installation instructions in the Readme for the CentOS section.

[marnao]

@langhorne thanks for this!

Before I merge, have you tried using pip to install pefile?

[askkemp]

@marnao I went back and tested the manually installed pefile module (pefile-2016.3.28-py2.7). I tested it against PuTTY.exe Found out that META_PE had an exception.

I then removed it pip uninstall pefile==2016.3.28 (which seems to have worked) and then pip installed it which gave me pefile-2016.3.28-py2.7. A rescan of the EXE had NO errors.

So it appears that pip install pefile is the best option.

[marnao]

nice! can you update the instructions to reflect that please?

[askkemp]

I used the web gui so I think I made the change correctly.

[marnao]

It looks like you added this to yum install instead of pip install

[askkemp]

I'm redoing it all again and I don't think the below are needed:

yum install autoconf automake libtool swig

Thoughts?

Here is what I have now:

Installing on CentOS

Based on installation from a CentOS 7.3 minimun installation

1. Install framework dependencies:

   sudo yum install -y epel-release
   sudo yum install -y python-pip python-zmq python-devel gcc
   sudo pip install gevent interruptingcow yara-python 

If you want to use the Suricata integration prototype, then also 'pip install redis'

2. Install Laika BOSS scanning module dependencies

   sudo yum install openssl-devel ssdeep-devel libffi-devel
   sudo pip install cffi six IPy fluent-logger javatools m2crypto olefile pylzma pyclamd py-unrar2 pexpect pefile ssdeep

3. Install pyexif

pyexif is a Python library to communicate with the ExifTool command-line application. Install ExifTool application following instructions at http://www.sno.phy.queensu.ca/~phil/exiftool/install.html#Unix.

```shell
Install Exiftool application (see above sentence)
sudo yum install perl-devel
wget https://github.com/smarnach/pyexiftool/archive/master.zip
unzip master.zip
sudo python setup.py build
sudo python setup.py install
```

You may need to set the LD_LIBRARY_PATH variable to include /usr/local/lib when running Laika.

[askkemp]

I overhauled the README and connected parts to the wiki.