Merge pull request #1 from richfitz/master

Minor changes towards making R CMD check work
Changed name of total.nodes to total.tips
Changed to only export main function
Changed to only export main function
Moved unnecessary man files
Removed exportpattern()
Fixed documentation for SPELT function
Fixed documentation for plot.SPELT function
Fixed documentation for summary.SPELT function
Removed excess { from  plot.SPELT function
.Rbuildignore file initial commit
Remove excess documentation
Modified README
Travis support