added dplyr pipeline for pre-processing time-series data
renamed helper.R file to ebola_rCharts.R
added tabPanels to prep for additional features
added rickshaw and nvd3 plots with reactive inputs
added tab for nvd3
added rickshaw.css for necessary styles
functions to preprocess data for rCharts
fixed formatting
removed raw script
modified .gitignore to ignore .Rproj file
fixed "showOutput" error
new line eof
removed redundancy of fetch to server
fixed standardization of dates to ISO 8601 format