[Doc] Update README.

Author: kaniandr

README.md

@@ -1,16 +1,15 @@
 # TSAR Advisor
 
 This extension proposes some useful information about a program to simplify its parallelization.
+It also provide some useful source-to-source transformations for programs as well as automate theire parallelization.
 The advisor currently support C/C++ languages and based on LLVM & Clang projects.
 
-To analyse source code:
-* Open C/C++ file
-* Use editor context menu to select `TSAR: Analyse file` item
-* The description of discovered traits is rendered in the new tab
-* Use editor context menu item `TSAR: Close session` to stop analysis
-
-## Features
-
-At this moment only analysis statistic can be presented.
+To analyse or transform source code:
 
+* Open C/C++ file
+* Use context menu or type one of available TSAR commands in the Command Palette.
+* If `TSAR: Analyse file` action is used the description of discovered traits is rendered in the new tab.
+* If some transformation is requested, the original file is changed on success.
+* Some diagnostic messages may be also provided.
 
+> __Attention.__ To run the adviser the TSAR tool must be installed. It must be available in the system PATH or the path to `tsar-server` executable must be configured manually (see `Analysis Server` configuration variable for details). Details about the TSAR tool can be found in [TSAR Wiki](https://github.com/dvm-system/tsar/wiki).