update parser document

JIRA: PARSER-14

document format has been updated, this patch is to improve the document
in parser project to satisfy the requirement of sphinx.

Change-Id: I629fa84a1b0333e9b59c24cdf7444733f7b35582
Signed-off-by: MatthewLi <matthew.lijun@huawei.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/docs/parser_docs/yang2tosca/yang2tosca.rst b/docs/parser_docs/yang2tosca/yang2tosca.rst
new file mode 100644
index 0000000..7235fc3
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+++ b/docs/parser_docs/yang2tosca/yang2tosca.rst
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+========================
+Parser YANG2TOSCA
+========================
+
+Overview
+===========================
+
+Parser is an open source project and licensed under Apache 2. Parser will help
+to provide a tooling mechanism, by parsing Telecom operators’ VNF descriptors
+(YANG templates) into TOSCA templates and then further translate TOSCA
+templates into certain common templates, which could be used in IaaS orchestration
+projects like OpenStack Heat.
+
+Prerequisites
+==========================
+
+Parser requires the following to be installed.
+
+1. PYANG
+-----------------
+
+Please follow the below installation steps.
+
+Step 1: Clone pyang tool or download the zip file from the following link.
+                git clone https://github.com/mbj4668/pyang.git
+                                or
+                wget https://github.com/mbj4668/pyang/archive/master.zip
+
+Step 2: Change directory to the downloaded directory and run the setup file.
+                cd pyang
+                python setup.py
+
+2. python-lxml
+--------------------
+
+Please follow the below installation link.
+        http://lxml.de/installation.html
+
+
+Installation
+============================
+
+Please follow the below installation steps to install parser.
+
+Step 1: Clone the parser project.
+        git clone https://gerrit.opnfv.org/gerrit/parser
+
+Execution
+===========================
+
+Step 1: Change directory to where the scripts are present.
+        cd parser/yang2tosca
+
+Step 2: Copy the YANG file which needs to be converted into TOSCA to
+        current (parser/yang2tosca) folder.
+
+Step 3: Run the python script "parser.py" with the YANG file as an input option.
+                python parser.py -n "YANG filename"
+        Example:
+                python parser.py -n example.yaml
+
+Step 4: Verify the TOSCA YAMl which file has been created with the same name
+        as the YANG file with a “_tosca” suffix.
+                cat "YANG filename_tosca.yaml"
+        Example:
+                cat example_tosca.yaml