adding git ignore and cmake file for building mypippkg test

.gitignore

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+build
+test/mypippkg

test/mypippkg.cmake

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+cmake_minimum_required(VERSION 2.8.3)
+project(mypippkg)
+
+# This is a full project CMakeLists (in case we call it independently for tests or so)
+set (PIP_PROJECT_DIR mypippkg)
+
+find_package(catkin REQUIRED)
+# Include our own extension from source (to be sure)
+include(../cmake/catkin-pip.cmake)
+# But in your own packages you want to :
+# find_package(catkin REQUIRED COMPONENTS catkin_pure_python)
+
+# We need to install the pip dependencies in the workspace being created
+catkin_pip_requirements(${PIP_PROJECT_DIR}/requirements.txt)
+# CAREFUL : all projects here share the same workspace. pip might have conflicts...
+
+# defining current package as a package that should be managed by pip (not catkin - even though we make it usable with workspaces)
+catkin_pip_package(${PIP_PROJECT_DIR})
+
+## Unit tests
+if (CATKIN_ENABLE_TESTING)
+    catkin_add_nosetests(${PIP_PROJECT_DIR}/tests)
+endif()