Add build tools and script

Pipfile

@@ -9,6 +9,9 @@ pytest = "*"
 pytest-flakes = "*"
 rstcheck = "*"
 pytest-cov = "*"
+setuptools = "*"
+wheel = "*"
+twine = "*"
 
 [packages]
 

build.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -e
+
+if [ -d dist ]; then
+    rm -rf dist
+fi
+if [ -d build ]; then
+    rm -rf build
+fi
+if [ -d lindh_jsonobjecy.egg-info ]; then
+    rm -rf lindh_jsonobjecy.egg-info
+fi
+
+pipenv update --dev setuptools wheel twine
+pipenv run python setup.py sdist bdist_wheel
+pipenv run python -m twine upload dist/*