add presentation at NGI/IGN + formation at Arlon (4 syllabi + 1 picture) (#3)

Author: nobohan

mapathons/2019/formation_sentiers_balises_Arlon/epn_arlon_openstreetmap_formation_consultation_v20181022.pdf

@@ -7,7 +7,8 @@
 - 2018-07-30 : [*Road Completion in Belgium - Mapping & verifying \*all\* the roads.*](https://osmbe.github.io/presentations/talks/2018-07-30-road-completion-babelshausen/index.html) @ [State of the Map 2018](https://2018.stateofthemap.org/) by [B. Abelshausen](https://github.com/xivk/)
 - 2018-07-29 : [*Coordinating improved communication between the academic and OpenStreetMap communities*](https://osmbe.github.io/presentations/talks/2018-07-29-osm-science-jschouppe/index.html) @ [State of the Map 2018](https://2018.stateofthemap.org/) by [J. Schouppe](https://github.com/joostschouppe)
 - 2018-07-28 : [*The Belgian perspective to building OpenStreetMap community*](https://osmbe.github.io/presentations/talks/2018-07-28-openstreetmap-belgium-jschouppe-babelshausen/index.html) @ [State of the Map 2018](https://2018.stateofthemap.org/) by [B. Abelshausen](https://github.com/xivk/) & [J. Schouppe](https://github.com/joostschouppe)
+- 2018-05 : [*OpenStreetMap - Presentation at the Belgian NGI/IGN*](https://osmbe.github.io/presentations/talks/2018_05_OpenStreetMap_IGN_Minet_fr.odp) @ NGI/IGN by [J. Minet](http://www.nobohan.be/)
 - 2017-04-03 : [*The VGI or Crowdsourcing Viewpoint #1*](http://www.cs.nuim.ie/~pmooney/eurosdr2017/osm_and_gov_data.pptx) @ [EuroSDR 2017](http://www.cs.nuim.ie/~pmooney/eurosdr2017/) by [J. Schouppe](https://github.com/joostschouppe)
 - 2017-03-16 : [*A view of OpenStreetMap from inside the Belgian community*](https://osmbe.github.io/presentations/talks/2017-03-16-road-completion-babelshausen/index.html) @ [BeGeo 2017](http://begeo.be/) by [B. Abelshausen](https://github.com/xivk/)
-- 2015-03-23 : [*OpenStreetMap*](http://www.nobohan.be/docs/2015_03_23_CafeNumeriqueArlon_OpenStreetMap_Minet.pdf) @ Café Numérique Arlon by J. Minet
+- 2015-03-23 : [*OpenStreetMap*](http://www.nobohan.be/docs/2015_03_23_CafeNumeriqueArlon_OpenStreetMap_Minet.pdf) @ Café Numérique Arlon by [J. Minet](http://www.nobohan.be/)
 - 2015-02-23 : [*OSM as an open data source*](http://www.slideshare.net/glennplas/opendata-namen) @ Namur by [G. Plas](https://github.com/gplv2)