Update README.md

Author: tamaskis

README.md

@@ -1,6 +1,6 @@
 # ODE Solver Toolbox [![View ODE Solver Toolbox on File Exchange](https://www.mathworks.com/matlabcentral/images/matlab-file-exchange.svg)](https://www.mathworks.com/matlabcentral/fileexchange/103975-ode-solver-toolbox)
 
-Collection of fixed-step ODE solvers, functions to generate ODE solver equations, and functions for transforming matrix ODEs to vector ODEs.
+Collection of fixed-step IVP solvers, functions to generate IVP solver equations, and functions for transforming matrix IVPs to vector IVPs.
 
 
 ## Documentation
@@ -11,19 +11,19 @@ Collection of fixed-step ODE solvers, functions to generate ODE solver equations
 To open the home page of the toolbox documentation in MATLAB, type
 
 ```
-doc_OST
+doc_IST
 ```
 
 in the Command Window. To open the documentation of a specific function with name `function_name` from the Command Window, type
 
 ```
-doc_OST function_name
+doc_IST function_name
 ```
 
 To open the PDF file with the technical documentation (Fixed_Step_ODE_Solvers.pdf) from the Command Window, type
 
 ```
-doc_OST tech
+doc_IST tech
 ```
 
 ## Explicit Runge-Kutta (Single-Step) Methods