diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..d3bd36e
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+layout pipenv
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
index 8e2530d..7d32218 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
+dist: xenial
 language: python
 
 branches:
@@ -5,14 +6,14 @@ branches:
     - gh-pages
 
 python:
-  - 2.7
-  - 3.4
-  - 3.5
-  - 3.6
+  - '2.7'
+  - '3.4'
+  - '3.5'
+  - '3.6'
+  - '3.7'
   #- pypy
   #- pypy3
 
-before_install:
 
 install:
   - pip install tox tox-travis
diff --git a/Pipfile b/Pipfile
new file mode 100644
index 0000000..6b090f1
--- /dev/null
+++ b/Pipfile
@@ -0,0 +1,15 @@
+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[dev-packages]
+gitchangelog = "*"
+twine = "*"
+pytest = "*"
+pytest-xdist = "*"
+
+[packages]
+pyros-genmsg = "*"
+pyros-genpy = "*"
+filefinder2 = "*"
diff --git a/README.rst b/README.rst
index 4d7b67f..672a6bd 100644
--- a/README.rst
+++ b/README.rst
@@ -62,7 +62,8 @@ Usage:
     with rosimport.RosImporter():
 
         import my_msgs.msg  # directly from a my_msgs/msg directory containing My.msg ros definition
-        # Or relatively :
-        from . import msg
 
     # modules are still available, but importer has been deactivated.
+Relative imports are supported, as well as all the import semantics of python3 (even in python2, thanks for filefinder2)
+
+TODO : TermtoSVG / ASCIInema !
diff --git a/example/MyPyRosPkg/__init__.py b/example/MyPyRosPkg/__init__.py
new file mode 100644
index 0000000..588465f
--- /dev/null
+++ b/example/MyPyRosPkg/__init__.py
@@ -0,0 +1,12 @@
+import sys
+import rosimport
+
+with rosimport.RosImporter():
+
+    from . import msg
+
+print("dir(msg) ->" + repr(dir(msg)))
+
+import inspect
+print("inspect.getsource(msg.mymsg) ->")
+print(inspect.getsource(msg.mymsg))
diff --git a/example/MyPyRosPkg/msg/mymsg.msg b/example/MyPyRosPkg/msg/mymsg.msg
new file mode 100644
index 0000000..cb8d81e
--- /dev/null
+++ b/example/MyPyRosPkg/msg/mymsg.msg
@@ -0,0 +1 @@
+string mystring
diff --git a/example/README.rst b/example/README.rst
new file mode 100644
index 0000000..7da9ded
--- /dev/null
+++ b/example/README.rst
@@ -0,0 +1,28 @@
+HOW TO USE
+==========
+
+Use a virtualenv. If you are not sure how, you can do some very useful reading at https://packaging.python.org/tutorials/managing-dependencies/
+
+If you have direnv (and pipenv) on your machine, this is done as soon as you 'cd' into rosimport working tree.
+
+
+1) Install rosimport in the virtualenv::
+
+  (rosimport--FuygrvY)alexv@AlexV-ROS-vbox:~/rosimport$ pipenv install -e .
+  Installing -e .…
+  Adding rosimport to Pipfile's [packages]…
+  ✔ Installation Succeeded 
+  Pipfile.lock (474337) out of date, updating to (c8604e)…
+  Locking [dev-packages] dependencies…
+  ✔ Success! 
+  Locking [packages] dependencies…
+  ✔ Success! 
+  Updated Pipfile.lock (474337)!
+  Installing dependencies from Pipfile.lock (474337)…
+    🐍   ▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉ 5/5 — 00:00:02
+  (rosimport--FuygrvY)alexv@AlexV-ROS-vbox:~/rosimport$ 
+
+2) Import the package to trigger the import sequence
+
+
+
diff --git a/requirements-dev.txt b/requirements-dev.txt
deleted file mode 100644
index f54ec84..0000000
--- a/requirements-dev.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-gitchangelog
-twine
-
-# this is needed as install dependency since we embed tests in the package.
-pytest>=2.5.1
-pytest-xdist  # for --boxed (careful with the version it will be moved out of xdist)
-
-
-# source access to latest filefinder from git ...
-# -e git+https://github.com/asmodehn/filefinder2.git#egg=filefinder2
-
-# ros dependencies (necessary when running tests from install)
--e git+https://github.com/asmodehn/genmsg.git@setuptools#egg=ros_genmsg
--e git+https://github.com/asmodehn/genpy.git@setuptools-kinetic#egg=ros_genpy
diff --git a/tox.ini b/tox.ini
index 9014991..8b3f567 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 # content of: tox.ini , put in same dir as setup.py
 [tox]
-envlist = py27, py34, py35, py36
+envlist = py27, py34, py35, py36, py37
 #, pypy
 #, pypy3
 skip_missing_interpreters=true
@@ -10,6 +10,7 @@ skip_missing_interpreters=true
 3.4 = py34
 3.5 = py35
 3.6 = py36
+3.7 = py37
 
 # not tested yet
 #pypy = pypy
@@ -28,12 +29,12 @@ skipsdist=True
 
 [testenv]
 whitelist_externals = git
-deps =
-    # only when we want to test latest unreleased filefinder2 | genpy | genmsg
-    -rrequirements-dev.txt
 
 # to always force recreation and avoid unexpected side effects
 recreate=True
+deps=
+  pytest
+  pytest-xdist
 
 commands=
     git submodule sync -q