Bump version to 3

- Add description to each project
- Add .sh files to test and package

src/Postgres/BitBadger.Documents.Postgres.fsproj

@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <PackageReleaseNotes>Adds Field type for by-field operations (BREAKING from rc-1); adds RemoveFields* functions</PackageReleaseNotes>
+    <Description>Use PostgreSQL as a document database</Description>
+    <PackageReleaseNotes>v3 release; official replacement for BitBadger.Npgsql.Documents</PackageReleaseNotes>
     <PackageTags>JSON Document PostgreSQL Npgsql</PackageTags>
   </PropertyGroup>