Add LICENCE file (that points to not-yet-defined terms)

LICENSE

@@ -0,0 +1,37 @@
+With regard to the Bugsink Software:
+
+This software and associated documentation files (the "Software") may only be
+used under either of the following 2 conditions:
+
+1. In production, if you (and any entity that you represent) have agreed to,
+   and are in compliance with, the Bugsink Subscription Terms of Service,
+   available at TODO (the "Terms"), or other agreement governing the use of the
+   Software, as agreed by you and Bugsink B.V., and otherwise have a valid
+   Bugsink subscription for the correct number of users.
+
+OR
+
+2. In a non-production environment, for a single user, for the purpose of
+   evaluating the Software, provided that you are not using or have not used
+   the Software in a way that would violate the Terms.
+
+Subject to the foregoing condition, you are free to modify this Software,
+provided that you do not remove the copyright notice and the license notice and
+do not modify the code in a way that would conflict with the Terms.
+
+You are not granted any other rights beyond what is expressly stated herein.
+
+Subject to the foregoing, it is forbidden to copy, merge, publish, distribute,
+sublicense, and/or sell the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+For all third party components incorporated into the Bugsink Software, those
+components are licensed under the original license provided by the owner of the
+applicable component.