Update DESCRIPTION

Get rid of parallel.
Update R/summary.ellipsefit.R

Get rid of parallel.
Update R/nlssummary.R

Get rid of parallel.
Update R/directsummary.R

Get rid of parallel.
Update R/harmonic2summary.R

Get rid of parallel.
Update R/lmsummary.R

Get rid of parallel.
Update man/summary.ellipsefit.Rd

Fix usage.
Merge pull request #3 from spencerm89/pairbranch

Pairbranch