added example solvent file.

solventmapcreator/test/resources/watersolvent.xml

+<?xml version='1.0' encoding='UTF-8'?>
+<phase:SolventList xmlns:cml="http://www.xml-cml.org/schema" xmlns:phase="http://www-hunter.ch.cam.ac.uk/PhaseSchema" xmlns:ssip="http://www-hunter.ch.cam.ac.uk/SSIP">
+  <phase:Solvent phase:solventID="water" phase:solventName="water" phase:numberOfMolecules="1">
+    <phase:Molecule phase:stdInChIKey="XLYOFNOQVPJJNP-UHFFFAOYSA-N">
+      <ssip:SSIPList>
+			<ssip:SurfaceInformation numberOfPoints="1000">
+				<ssip:IsosurfaceDensity>0.002</ssip:IsosurfaceDensity>
+				<ssip:TotalSurfaceArea>10.0</ssip:TotalSurfaceArea>
+				<ssip:NegativeSurfaceArea>5.0</ssip:NegativeSurfaceArea>
+				<ssip:PositiveSurfaceArea>5.0</ssip:PositiveSurfaceArea>
+			</ssip:SurfaceInformation>
+			<ssip:SSIP x3="1.0" y3="0.0" z3="0.0" nearestAtomID="a1">2.8</ssip:SSIP>
+			<ssip:SSIP x3="1.0" y3="1.0" z3="1.0" nearestAtomID="a1">2.8</ssip:SSIP>
+			<ssip:SSIP x3="0.0" y3="1.0" z3="1.0" nearestAtomID="a1">-4.5</ssip:SSIP>
+			<ssip:SSIP x3="0.0" y3="1.0" z3="0.0" nearestAtomID="a1">-4.5</ssip:SSIP>
+		</ssip:SSIPList>
+      <phase:Concentration phase:units="MOLAR">55.350000</phase:Concentration>
+    </phase:Molecule>
+  </phase:Solvent>
+</phase:SolventList>