Updated theme_blank function (deprecated since ggplot2 0.9.2) to element_blank()
Updated opts function (deprecated since ggplot2 0.9.1) to labs()
remove restriction of providing at least 2 genes for heatmap plot
Merge pull request #95 from thehyve/issues/single_gene_heatmap

Issues/single gene heatmap
Merge branch 'master' into features/refactor_acgh_freq_analysis