synchronized home.rst file with aboutcode-toolkit readme file

Signed-off-by: Naveen-singla <Naveensingla2001@gmail.com>

Author: Naveen-singla

docs/source/aboutcode-toolkit/home.rst

@@ -2,16 +2,14 @@ AboutCode Toolkit
 =================
 
 Introduction
-----------------------
-
+------------
 The AboutCode Toolkit and ABOUT files provide a simple way to document the
 origin, license, usage and other important or interesting information about
 third-party software components that you use in your project.
 
 You start by storing ABOUT files (a small YAML formatted text file with field/value pairs)
 side-by-side with each of the third-party software components you use.
 Each ABOUT file documents origin and license for one software.
-For more information on the ABOUT file format, visit http://www.dejacode.org
 There are many examples of ABOUT files (valid or invalid) in the testdata/
 directory of the whole repository.
 
@@ -22,7 +20,7 @@ In addition, this tool is able to generate attribution notices and
 identify redistributable source code used in your project to help you comply
 with open source licenses conditions.
 
-This version of the AboutCode Toolkit follows the ABOUT specification version 3.1.2 at:
+This version of the AboutCode Toolkit follows the ABOUT specification version 3.2.1 at:
 https://aboutcode-toolkit.readthedocs.io/en/latest/specification.html
 
 
@@ -40,7 +38,7 @@ Build and tests status
 
 REQUIREMENTS
 ------------
-The AboutCode Toolkit is tested with Python 2.7 and 3.6 on Linux, Mac and Windows.
+The AboutCode Toolkit is tested with Python 3.6.2 or above only on Linux, Mac and Windows.
 You will need to install a Python interpreter if you do not have one already
 installed.
 
@@ -67,6 +65,30 @@ or on windows:
     configure
 
 
+Activate the virtualenv
+-----------------------
+To activate the virtualenv, run (on posix):
+    source bin/activate
+or on windows:
+    bin\\activate
+
+
+Deactivate the virtualenv
+-------------------------
+To deactivate the virtualenv, run (on both posix and windows):
+    deactivate
+
+
+VERSIONING SCHEMA
+-----------------
+Starting at AboutCode version 4.0.0, the AboutCode Toolkit will follow SemVer for the versioning schema.
+
+i.e. MAJOR.MINOR.PATCH format
+    1. MAJOR version when making incompatible API changes,
+    2. MINOR version when making functionality in a backwards compatible manner, and
+    3. PATCH version when making backwards compatible bug fixes.
+
+
 REFERENCE
 ---------
 See https://github.com/nexB/aboutcode-toolkit/blob/master/REFERENCE.rst for reference
@@ -104,7 +126,7 @@ The AboutCode Toolkit is available through GitHub. For the latest version visit:
 HACKING
 -------
 We accept pull requests provided under the same license as this tool.
-You agree to the http://developercertificate.org/
+You agree to the http://developercertificate.org/ 
 
 
 LICENSE