Cufflinks installation for Unix systems

Cufflinks easy installation

The [Cufflinks](http://cole-trapnell-lab.github.io/cufflinks/)  Unix package is extremely well regarded for RNA-seq analysis.  Yet it is widely acknowledged that installation is difficult, not least by the [Cufflinks authors themselves](http://cole-trapnell-lab.github.io/cufflinks/getting_started/#installing-a-pre-compiled-binary-release)! Whilst the authors provide precompiled binaries to make the installation process easier [the instructions aren't very explicit](http://cole-trapnell-lab.github.io/cufflinks/getting_started/). Having spent a good hour on Google and StackOverflow I've put together an instruction list for the less experienced Unix user like myself.

Note this guide is for Unix distributions.

1. Download the Cufflinks tar from http://cole-trapnell-lab.github.io/cufflinks/install/
'''shell
wget http://cole-trapnell-lab.github.io/cufflinks/install/
'''
2. Untar the downloaded file
'''shell
tar -xvf cufflinks-2.2.1.Linux_x86_64.tar.gz
'''
3. Move the resulting files to '/usr/local/bin'
'''shell
sudo mv ./cufflinks-2.2.1.Linux_x86_64 /usr/local/bin
'''
4. Add the directory to the 'PATH' variable for system wide calling
'''shell
export PATH=$PATH:/usr/local/bin/cufflinks-2.2.1.Linux_x86_64
'''
5. Test by running the program from the home directory. If the installation has worked then the usage for cufflinks should be printed to the screen.
'''shell
cd ~
cufflinks
'''

Thanks that is helped me a lot