update readme

README.md

@@ -3,19 +3,63 @@
 - dotnet cli tool: `dotnet proj-info`
 - as library: `Dotnet.ProjInfo`
 
-Support:
+Features:
 
 - get properties
 - get project to project references
 - get fsc command line arguments
+- list installed .NET Framework versions
+- get references path of .NET asseblies like `System`, `System.Data`
+
+Support:
 
-Support both dotnet/sdk style projects (slim proj, usually .net core) and old sdk projects (verbose proj, usually .NET)
+- dotnet/sdk style projects (slim proj, usually .net core)
+- old sdk projects (verbose proj, usually .NET)
+
+Runtimes:
 
 Works on mono and windows, and allow to specify the `dotnet` or `msbuild` to use
 
-Add usual args of .NET cli, like `-c`, `-f`, `-r`
+Notes:
+
+Add usual args of .NET cli, like `-c` (`--configuration`), `-f` (`--framework`), `-r` (`--runtime`)
 
-see [examples](https://github.com/enricosada/dotnet-proj-info/tree/master/examples) directory
+See [examples](https://github.com/enricosada/dotnet-proj-info/tree/master/examples) directory
+
+```
+USAGE: proj-info [--help] [--fsc-args] [--project-refs] [--get-property [<string>...]]
+                 [--net-fw-references-path [<string>...]] [--installed-net-frameworks] [--framework <string>]
+                 [--runtime <string>] [--configuration <string>] [--verbose] [--msbuild <string>]
+                 [--dotnetcli <string>] [--msbuild-host <auto|msbuild|dotnetmsbuild>] [<string>]
+
+PROJECT:
+
+    <string>              the MSBuild project file
+
+OPTIONS:
+
+    --fsc-args            get fsc arguments
+    --project-refs        get project references
+    --get-property, -gp [<string>...]
+                          msbuild property to get (allow multiple)
+    --net-fw-references-path [<string>...]
+                          list the .NET Framework references
+    --installed-net-frameworks
+                          list of the installed .NET Frameworks
+    --framework, -f <string>
+                          target framework, the TargetFramework msbuild property
+    --runtime, -r <string>
+                          target runtime, the RuntimeIdentifier msbuild property
+    --configuration, -c <string>
+                          configuration to use (like Debug), the Configuration msbuild property
+    --verbose, -v         verbose log
+    --msbuild <string>    MSBuild path (default "msbuild")
+    --dotnetcli <string>  Dotnet CLI path (default "dotnet")
+    --msbuild-host <auto|msbuild|dotnetmsbuild>
+                          the Msbuild host, if auto then oldsdk=MSBuild dotnetSdk=DotnetCLI
+    --help                display this list of options.
+
+```
 
 ## Build