Changed default plot location

The plot is now saved by default in the sim directory with the name
'history'.
Bonus added command that opens the plot at once.
Actual values are now supplied in a list

In order to plot multiple values in one script the real parameter values
are now supplied in a list of arbitrary length (only 2 are used, one for
R nought and one for become uninfectious rate).
Plotting R0 and becomeUninfectiousRate

The script now plots both the R0 and becomeUninfectiousRate from all the
runs of the simulation. Also opens both plots for faster viewing.
LogReader now computes becomeUninfectiousRate.
SimulationRunner computes the means and hpds

SimulationRunner now reads and computes the data points for all of the
simulation runs - the R0 and becomeUninfectiousRate.
Merge branch 'master' of github.com:junniest/TBSimulationStudy