[build] Prepare nuget description

Author: SIDOVSKY

ExpressionDelegates.Generation/ExpressionDelegates.Generation.csproj

@@ -12,8 +12,12 @@
     <PackageProjectUrl>https://github.com/SIDOVSKY/ExpressionDelegates</PackageProjectUrl>
     <RepositoryType>git</RepositoryType>
     <Copyright>Vadim Sedov</Copyright>
-    <Description>A tool which generates delegates to properties, fields, methods and constructors used in expression trees.</Description>
-    <PackageTags>linq, expression, tree, delegate, source, code, generator, accessor, method, constructor</PackageTags>
+    <Description>ExpressionDelegates is a tool which generates delegates to properties, fields, methods and constructors used in linq expression trees.
+
+The purpose of this library is to compile the most common and simplest operations in expression trees during the build  to avoid their slow compilation at runtime or invoсation overhead after interpretation.
+
+If your project doesn't have linq expressions to generate delegates from and you just want to use the generated delegates from other assemblies, please install `ExpressionDelegates.Base` NuGet package to avoid any code generation attempts.</Description>
+    <PackageTags>linq, expression, tree, delegate, source, code, generator, field, property, accessor, method, constructor</PackageTags>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">

ExpressionDelegates/ExpressionDelegates.csproj

@@ -12,8 +12,12 @@
     <PackageProjectUrl>https://github.com/SIDOVSKY/ExpressionDelegates</PackageProjectUrl>
     <RepositoryType>git</RepositoryType>
     <Copyright>Vadim Sedov</Copyright>
-    <PackageTags>linq, expression, tree, delegate, source, code, generator, accessor, method, constructor</PackageTags>
+    <PackageTags>linq, expression, tree, delegate, source, code, generator, field, property, accessor, method, constructor</PackageTags>
     <Version>1.0.0</Version>
+    <Description>ExpressionDelegates is a tool which generates delegates to properties, fields, methods and constructors used in linq expression trees.
+
+This package contains only the base classes required for expression delegates' usage. It should be used in projects that do not contain any linq expressions to generate delegates from, but make use of the delegates generated for other assemblies.
+Delegates generation is provided via the main `ExpressionDelegates.Generation` package.</Description>
   </PropertyGroup>
 
 </Project>