Adds demo to travis

.travis.yml

@@ -2,4 +2,6 @@ language: bash
 services: docker
 script:
 - ./build-me.sh
+- docker run --rm -v `pwd`/docs/ci/demo:/demo --entrypoint=/demo falsifiable/popper
 - cd popper/_check && ./build_images
+- docker build -t falsifiable/jenkins docs/ci/jenkins/docker

docs/ci/demo

@@ -0,0 +1,10 @@
+#!/bin/bash
+set -ex
+mkdir /tmp/mypaper
+cd /tmp/mypaper
+git init
+popper init
+popper init mypipeline
+popper ci travis
+cd pipelines/mypipeline
+popper check

popper/Dockerfile

@@ -1,6 +1,10 @@
 FROM golang:1.9
+
 ADD . /go/src/github.com/systemslab/popper
+
 WORKDIR /go/src/github.com/systemslab/popper
-RUN go get ./
-RUN go build
+
+RUN go get ./ && \
+    go build
+
 ENTRYPOINT ["/go/bin/popper"]

popper/init.go

@@ -124,6 +124,11 @@ name is 'paper', then a 'paper' folder is created. Otherwise, an pipeline named
 		if len(args) > 1 {
 			log.Fatalln("This command takes one argument at most.")
 		}
+		if !sh.Test("dir", popperFolder) {
+			if err := sh.Command("git", "clone", "https://github.com/systemslab/popper", popperFolder).Run(); err != nil {
+				log.Fatalln(err)
+			}
+		}
 		if !sh.Test("dir", ".git") {
 			log.Fatalln("Can't find .git folder. Are you on the root folder of project?")
 		}