Update README.md

README.md

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   <img width = "250" src="docs/VPLanetLogo.png?raw=true"/>
 </p>
 
-<h1 align="center">VSPACE: Explore Parameter Spaces with VPLanet</h1>
+<h1 align="center">vspace: Generate Parameter Spaces for VPLanet</h1>
 
 <p align="center">
   <a href="https://VirtualPlanetaryLaboratory.github.io/vspace/"><img src="https://img.shields.io/badge/read-the_docs-blue.svg?style=flat"></a>
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 </p>
 
 
-``VSPACE`` is a tool to build input files for parameter sweeps with [``VPLanet``](https://github.com/VirtualPlanetaryLaboratory/vplanet).
-With ``VSPACE`` you can quickly and easily build input files with specific
+``vspace`` is a tool to build input files for parameter sweeps with [``VPLanet``](https://github.com/VirtualPlanetaryLaboratory/vplanet).
+With ``vspace`` you can quickly and easily build input files with specific
 parameters with different distributions, such as grids, normal distribution, even sines and cosines. After generating the trials, use the [``multi-planet`` package](https://github.com/VirtualPlanetaryLaboratory/multi-planet) to run the simulations
 on multi-core platforms, and use [``bigplanet``](https://github.com/VirtualPlanetaryLaboratory/bigplanet) to store and quickly analyze the results.