add github templates and mention twitter in readme

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,40 @@
+**I want to request a feature.**
+<!--
+Please describe your request
+-->
+
+
+<!------------------------->
+**I want to report a bug.**
+
+
+**SonarTS version:** <!-- version of SonarJS where you have a bug --><br>
+**Node.js version:** <!-- version of Node.js in your environment --><br>
+**TypeScript version:** <!-- version of TypeScript in your project --><br>
+
+**SonarQube version:** <!-- version of SonarQube if relevant --><br>
+**SonarLint version and used IDE:** <!-- fill if you use SonarTS in your IDE --><br>
+**TSLint version:** <!-- version of TSLint if you run SonarTS as a TSLint extension --><br>
+
+**Rule key:** <!-- key of the rule if you are bug reporting on a rule -->
+
+**Reproducer** 
+```
+// minimal reproducer if relevant
+console.log("Hello, world"); // False-positive here
+```
+
+**Logs**
+```
+// logs of analysis if relevant
+```
+
+**Expected behavior**
+
+<!------------------------->
+
+**I want to provide the following feedback.**
+
+**Rule key:** <!-- key of the rule if you are providing feedback for a rule -->
+
+**Example**

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1 @@
+Fixes #<!-- PUT ISSUE NUMBER HERE IF APPLICABLE -->

README.md

@@ -1,6 +1,11 @@
 # SonarTS [![Build Status](https://travis-ci.org/SonarSource/SonarTS.svg?branch=master)](https://travis-ci.org/SonarSource/SonarTS) [![NPM version](https://badge.fury.io/js/tslint-sonarts.svg)](http://badge.fury.io/js/tslint-sonarts) [![Quality Gate](https://next.sonarqube.com/sonarqube/api/badges/gate?key=sonarts)](https://next.sonarqube.com/sonarqube/dashboard?id=sonarts) [![Coverage](https://next.sonarqube.com/sonarqube/api/badges/measure?key=sonarts&metric=coverage)](https://next.sonarqube.com/sonarqube/component_measures/domain/Coverage?id=sonarts)
 Static code analyzer for TypeScript detecting bugs and suspicious patterns in your code.
 
+**Follow us on [twitter](https://twitter.com/sonarjs)** <br>
+
+*[To analyze pure JavaScript code, see SonarJS](https://github.com/SonarSource/sonarjs)*
+
+
 How does it work?
 * The [TypeScript compiler](https://github.com/Microsoft/TypeScript/wiki/Using-the-Compiler-API) provides [**AST**](https://en.wikipedia.org/wiki/Abstract_syntax_tree) and **type** information
 * On top of it we build the **symbol model** and the [**control flow**](https://en.wikipedia.org/wiki/Control_flow_graph) model
@@ -155,7 +160,7 @@ To have this code base locally:
 
 To run the ruling test:
 ```
-cd sonarts-code
+cd sonarts-core
 yarn ruling
 yarn ruling -- --rule <RuleFileName> # to run ruling for a single rule
 yarn ruling -- --update # to update the snapshots