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>
 

src/Postgres/README.md

@@ -45,7 +45,7 @@ Retrieve all customers:
 ```csharp
 // C#; parameter is table name
 // Find.All type signature is Func<string, Task<List<TDoc>>>
-var customers = await Find.All("customer");
+var customers = await Find.All<Customer>("customer");
 ```
 
 ```fsharp