Add logo (#19)

PrattParser/PrattParser.fsproj

@@ -14,6 +14,7 @@
     <PackageTags>fsharp;pratt-parser;parsing;parser;top-down;precedence;recursive;descent</PackageTags>
     <WarnOn>FS3559</WarnOn>
     <PackageId>WoofWare.PrattParser</PackageId>
+    <PackageIcon>logo.png</PackageIcon>
   </PropertyGroup>
 
   <ItemGroup>
@@ -24,6 +25,10 @@
       <Pack>True</Pack>
       <PackagePath>\</PackagePath>
     </None>
+    <None Include="logo.png">
+      <Pack>True</Pack>
+      <PackagePath>\</PackagePath>
+    </None>
   </ItemGroup>
 
   <ItemGroup>

README.md

@@ -1,5 +1,7 @@
 # WoofWare.PrattParser
 
+![Project logo: the face of a cartoon Shiba Inu wearing glasses, looking directly at the viewer, with a background of cartoon basic mathematical symbols. The dog is holding a pencil and a notepad with more symbols written on it. At the bottom is the slogan "EXPRESSION PAWS-ER".](./PrattParser/logo.png)
+
 A [Pratt parser](https://langdev.stackexchange.com/q/3254/1025), based on [Matklad's tutorial](https://matklad.github.io/2020/04/13/simple-but-powerful-pratt-parsing.html).
 
 Bug reports welcome; I wouldn't exactly say this is well-tested, although it has worked correctly on the two things I've used it for so far.