[enh][love] Create CONTRIBUTORS.md file. (#140)

* [enh][love] Create CONTRIBUTORS.md file.

CONTRIBUTORS.md

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+YunoHost web administration contributors
+========================================
+
+YunoHost is built and maintained by the YunoHost project community.
+Everyone is encouraged to submit issues and changes, and to contribute in other ways -- see https://yunohost.org/contribute to find out how.
+
+--
+
+Initial YunoHost web administration was built by Kload, for YunoHost v2.
+
+Most of code was written by opi, with help of numerous contributors.
+
+Translation is made by a bunch of lovely people over the world.
+
+We would like to thank anyone who ever helped the YunoHost project, and especially the web administration project <3
+
+
+YunoHost Administration Contributors
+------------------------------------
+
+- opi
+- Kload
+- Jérôme Lebleu
+- Julien 'ju' Malik
+- Hugo Roy
+- Laurent 'Bram' Peuch
+- Valentin 'zamentur' / 'ljf' Grimaud
+- M5oul
+
+
+YunoHost Administration Translators
+-----------------------------------
+
+If you want to help translation, please visit https://translate.yunohost.org/projects/yunohost/yunohost-admin/
+
+### Dutch
+
+- DUBWiSE
+- dosch
+
+### English
+
+- Bugsbane
+
+### French
+
+- Étienne Deparis
+- Jean-Baptiste Holcroft
+- Jérôme Lebleu
+- ljf (zamentur)
+- opi
+
+### German
+
+- david.bartke
+- Felix Bartels
+
+### Hindi
+
+- Anmol
+
+### Italian
+
+- danneso
+- Thomas Bille
+- Vincent
+
+### Portuguese
+
+- Deleted User
+
+### Spanish
+
+- Juanu