[analyzer]Add user docs rst

Summary:
Add user documentation page. This is an empty page atm, later patches will add
the specific user documentatoins.

Reviewers: dkrupp

Subscribers: whisperity, xazax.hun, baloghadamsoftware, szepet, rnkovacs, a.sidorin, mikhail.ramalho, Szelethus, donat.nagy, gamesh411, Charusso, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D64494

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@365639 91177308-0d34-0410-b5e6-96231b3b80d8

docs/ClangStaticAnalyzer.rst

@@ -5,15 +5,16 @@ Clang Static Analyzer
 The Clang Static Analyzer is a source code analysis tool that finds bugs in C, C++, and Objective-C programs.
 It implements *path-sensitive*, *inter-procedural analysis* based on *symbolic execution* technique.
 
-This is the Static Analyzer documentation page. 
+This is the Static Analyzer documentation page.
 
 See the `Official Tool Page <https://clang-analyzer.llvm.org/>`_.
 
 .. toctree::
    :caption: Table of Contents
    :numbered:
-   :maxdepth: 2  
- 
+   :maxdepth: 2
+
    analyzer/checkers
+   analyzer/user-docs
    analyzer/developer-docs
 

docs/analyzer/user-docs.rst

@@ -0,0 +1,4 @@
+User Docs
+=========
+
+Contents: