bubble up exceptions and error messages

improved examples

.circleci/config.yml

@@ -3,29 +3,29 @@ version: 2
 defaults: &defaults
   working_directory: ~/repo
   docker:
-    - image: circleci/node:11.12.0
+    - image: circleci/node:12.13.1
 
 jobs:
   build:
     <<: *defaults
     steps:
-      - run: sudo apt-get install libusb-1.0.0
+      - run: sudo apt-get update -y && sudo apt-get install -y libusb-1.0.0 libudev-dev
       - checkout
       - run: yarn install
       - run: yarn build
 
   test:
     <<: *defaults
     steps:
-      - run: sudo apt-get install libusb-1.0.0
+      - run: sudo apt-get update -y && sudo apt-get install -y libusb-1.0.0 libudev-dev
       - checkout
       - run: yarn install
       - run: yarn test:unit
 
   publish:
     <<: *defaults
     steps:
-      - run: sudo apt-get install libusb-1.0.0
+      - run: sudo apt-get update -y && sudo apt-get install -y libusb-1.0.0 libudev-dev
       - checkout
       - run: yarn install
       - run: yarn build

.gitignore

@@ -67,3 +67,6 @@ typings/
 TODO\.md
 
 \dist
+/certs/cert.pem
+/certs/server.cert
+/certs/server.key

certs/openssl.cnf

@@ -0,0 +1,12 @@
+[ req ]
+prompt = no
+distinguished_name = req_distinguished_name
+
+[ req_distinguished_name ]
+C = CH
+ST = TestState
+L = TestLocality
+O = Zondax
+OU = Development
+CN = Zondax
+emailAddress = info@zondax.ch