NER tagger dependencies

[kenprice]

TODO for the NER tagger dependency

• Create a symbolic link to the .tagger and .jar file, store at /usr/local/bin
• Have Travis download the dependencies and symlink

[idmontie]

Here is an example from another we repo we have that requires binary dependency: https://github.com/gios-asu/pdf-generation-experiment/blob/master/index.php

$snappy = new Pdf('/usr/local/bin/wkhtmltopdf');

We then have instructions in our README file:

1.  Download the binary: http://wkhtmltopdf.org/downloads.html
2.  Put it in `/usr/local/bin`

[rraub]

or we could create a vendor folder and put the jar's we need in there.

[rraub]

Just dont call it vendor because composer uses that folder already

[kenprice]

I helped out a bit. Created a branch off ian-devel, and made the following changes:

• Used configuration utility to make root path to Stanford NER library configurable.
• Travis: Fetch Stanford NER library and cache it. Save it to ./lib wrt project path.
• Travis: Use Java 8 OpenJDK instead of default Java 7. Used linuxbrew to achieve this.
• Travis: Cache ~/.linuxbrew so we don't have to keep downloading linuxbrew.
• Travis: Produce a config.conf file. The config file produced in Travis tests mainly concerns the NER tagger at this point. The SolrApiUrl entry is a placeholder.

The goal of these changes was to configure Travis properly so that Stanford NER can run on it.

If @rraub or @idmontie wants to review my changes, you can find it here.

I went ahead and merged my change into ian-devel after coordinating with @iajohns1