enhanced help message

src/TrainRuns.jl

@@ -40,7 +40,7 @@ The running time will be return in seconds.
 
 # Examples
 ```julia-repl
-julia> trainrun(train, path)
+julia> trainrun(train, path)[end,:t]
 xxx.xx # in seconds
 ```
 """

src/constructors.jl

@@ -14,7 +14,8 @@ The function Settings() will create a set of settings for the train run calculat
 # Example
 ```
 julia> my_settings = Settings() # will generate default settings
-Settings(mass_point, :distance, 20, 3, running_time, :dataframe)
+# massModel, stepVariable, stepSize, approxLevel, outputDetail, outputFormat
+Settings(:mass_point, :distance, 20, 3, :running_time, :dataframe)
 ```
 """
 function Settings(file="DEFAULT")