Update README.md

Author: JoseAntFer

README.md

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 # TriangleMeshDistance
 Header only, single file, simple and efficient C++11 library to compute the signed distance function (SDF) to a triangle mesh.
 
-The distance computation to the triangle collection is accelerated with a sphere bounding volume hierarchy. The sign of the distance is resolved with the method presented in *"Generating Signed Distance Fields From Triangle Meshes"* by Bærentzen, Andreas & Aanæs, Henrik. (2002). Assuming triangle normals point outwards from the enclosed volume, the sign of the distance will be positive outside and negative inside.
+The distance computation to the triangle collection is accelerated with a sphere bounding volume hierarchy. The sign of the distance is resolved with the method presented in *"Generating Signed Distance Fields From Triangle Meshes"* by Bærentzen, Andreas & Aanæs, Henrik. (2002).
+
+Assuming triangle normals point outwards from the enclosed volume, the sign of the distance will be positive outside and negative inside.
 
 ## Example
 ```cpp