Update README for 2.1.0

Author: natemcmaster

.appveyor.yml

@@ -1,11 +1,10 @@
-version: 2.1.0-rc.{build}+{branch}
+version: 2.1.0-rtm.{build}
 init:
   - git config --global core.autocrlf input
 clone_depth: 1
 branches:
   only:
     - master
-    - dev
     - appveyor
     - /^feature\/.*/
 build_script:

README.md

@@ -27,7 +27,7 @@ $ dotnet add package McMaster.Extensions.CommandLineUtils
 ```
 ```xml
 <ItemGroup>
-  <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="2.0.1" />
+  <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="2.1.0" />
 </ItemGroup>
 ```
 
@@ -46,8 +46,6 @@ See [samples/](./samples/) for more examples, such as:
 
 ### Attribute API
 
-_(This API was added in 2.1.0.)_
-
 ```c#
 using System;
 using McMaster.Extensions.CommandLineUtils;

version.props

@@ -1,8 +1,9 @@
 <Project>
   <PropertyGroup>
     <VersionPrefix>2.1.0</VersionPrefix>
-    <!-- <VersionSuffix>rc</VersionSuffix> -->
+    <VersionSuffix>rtm</VersionSuffix>
     <PackageVersion Condition="'$(APPVEYOR_REPO_TAG)' == 'true' AND '$(VersionSuffix)' != ''">$(VersionPrefix)-$(VersionSuffix)</PackageVersion>
+    <PackageVersion Condition="'$(APPVEYOR_REPO_TAG)' == 'true' AND '$(VersionSuffix)' == 'rtm'">$(VersionPrefix)</PackageVersion>
 
     <BuildNumber Condition=" '$(BuildNumber)' == '' ">$(APPVEYOR_BUILD_NUMBER)</BuildNumber>
     <BuildNumber Condition=" '$(BuildNumber)' == '' ">0</BuildNumber>