Fixed small issues and updated GitHub CI

-Make package manager functions return error
-Added Jenkensfile CI for testing purposes
-Updated the github CI for testing purposes

Jenkinsfile

@@ -0,0 +1,21 @@
+pipeline{
+	agent any
+
+	stages {
+		stage('Build'){
+			steps{
+				echo 'Building...'
+			}
+		}
+		stage('Test'){
+			steps{
+				echo 'Testing...'
+			}
+		}
+		stage('Deploy'){
+			steps{
+				echo 'Deploying...'
+			}
+		}
+	}
+}