Develop an API for NeXML I/O, and, RDF triples for BioRuby

by yeban for NESCent - National Evolutionary Synthesis Center

NeXML, is a data exchange format for phylogenetics, developed to overcome the problems posed by the existing formats. RDF is a data model used to represent metadata. NeXML by design supports the concept of RDF triples. The goal of the project is to: 1. Implement a NeXML parser/serialzer in BioRuby. 2. Develop an API to express RDF triples in BioRuby.