README improved

Author: MartinOtter

README.md

@@ -1,12 +1,11 @@
 # SignalTablesInterface_PyPlot
 
-[SignalTablesInterface_PyPlot](https://github.com/ModiaSim/SignalTablesInterface_PyPlot.jl) 
-is an interface from [SignalTables](https://github.com/ModiaSim/SignalTables.jl) to 
+This package is an interface from [SignalTables](https://github.com/ModiaSim/SignalTables.jl) to 
 [PyPlot](https://github.com/JuliaPy/PyPlot.jl) (= a
 Julia interface to [Matplotlib](http://matplotlib.org/))
 in order to be able to perform convenient line plots in SignalTables via PyPlot.
 
-SignalTablesInterface_PyPlot is usually not directly used, but is activated via package
+This package is usually not directly used, but is activated via package
 [SignalTables](https://github.com/ModiaSim/SignalTables.jl).
 For details of the installation and the usage, 
 see the [SignalTables documentation](https://modiasim.github.io/SignalTables.jl/stable/index.html).