Changes on my end since end of Master thesis


# Changes:

**Major change: breadth first completion:**
"people who work with ..." -> ["people who work with Solr", "people who work with Neo4j", ...]
**rather than:**
"people who work with ..." -> ["people who work with Solr", "people who work with Solr and Neo4j", ...]

**other:**
- Solr result retrieved and rendered in GUI. 
- Styling of GUI including highlighting of search box when the query matches the grammar
- Name change: "Natural Language Parser" -> "Precision Search"
- Explanation of how to use the application
- Vagrant fixes