[general][doc] added conda to links and fixed the title in install.rst

doc/beat/install.rst

@@ -3,9 +3,9 @@
 .. _beat-installation:
 
 
-==============
+===========================
  Installation Instructions
-==============
+===========================
 
 The BEAT is available as conda packages for linux and MacOS for locall usage. 
 

doc/beat/links.rst

@@ -15,3 +15,4 @@
 .. _python bindings: http://zeromq.org/bindings:python
 .. _markdown: http://daringfireball.net/projects/markdown/
 .. _restructuredtext: http://docutils.sourceforge.net/rst.html
+.. _conda: https://conda.io/