Added SonarQube analysis

.travis.yml

@@ -1,4 +1,11 @@
 language: python
+dist: xenial
+
+addons:
+  sonarcloud:
+    organization: "ezhov-evgeny"
+    token:
+      secure: f0f714f3bea6bd103e3eb82724ef3bb0d3b54d1d
 
 services:
   - docker
@@ -16,3 +23,4 @@ install:
   - python setup.py develop
 script:
   - python setup.py test
+  - sonar-scanner -X

sonar-project.properties

@@ -0,0 +1,9 @@
+sonar.projectKey=ezhov-evgeny_webdav-client-python-3
+sonar.organization=ezhov-evgeny
+# This is the name and version displayed in the SonarCloud UI.
+sonar.projectName=webdav-client-python-3
+sonar.projectVersion=0.13
+# Path is relative to the sonar-project.properties file. Replace "\" by "/" on Windows.
+sonar.sources=.
+# Encoding of the source code. Default is default system encoding
+sonar.sourceEncoding=UTF-8