add rugs of map posion
function for marker infomations
functions for transband infomations
add geno and pheno infomation to transbands
eqtl plots
PCA and LDA plots for transbands
add is.trans to a scanone.dataframe
depends on plyr
package built from  d4233406 for installing

[ci skip]
@ -> '.' in obj names
package built from  df361be8 for installing

[ci skip]
use gray plot for PCA and LDA
bug: used grep in a wrong way. may have multiple matches. eg: loc5 to
loc50, loc51...
save only useful info in out
add effect into transband so that the plot of Genetpatten and LODsign
are easier.
package built from  7e55a84f for installing

[ci skip]
some minor modify of the plots
package built from  6d45fd19 for installing

[ci skip]
add documents for function plot.eqtl
rename function