Added license information

Snap_rounding_2/doc_tex/Snap_rounding_2/PkgDescription.tex

@@ -1,5 +1,5 @@
 
-\begin{ccPkgDescription}{2D Snap Rounding}
+\begin{ccPkgDescription}{2D Snap Rounding \label{Pkg:SnapRounding2}}
 \ccPkgSummary{
 Snap Rounding is a well known method for converting
 arbitrary-precision arrangements of segments into a fixed-precision
@@ -9,7 +9,7 @@ Snap Rounding is a modification of Snap Rounding in which each vertex
 is at least half-the-width-of-a-pixel away from any non-incident
 edge. This package supports both methods.}
 
-%\ccPkgDependsOn{}
+\ccPkgDependsOn{\ccRef[Arrangements]{Pkg:Arrangement2}}
 \ccPkgMaturity{Introduced in \cgal\ 3.1}
-
+\ccPkgLicense{\ccLicenseQPL}
 \end{ccPkgDescription}