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+# Contributing to PySol FC
+
+You want to contribute? That's great! First of all see [these links](https://github.com/shlomif/Freenode-programming-channel-FAQ/blob/master/FAQ.mdwn#i-want-to-contribute-to-an-open-source-project-but-how-which-one-can-i-contribute-to)
+for general guidelines for contributing to open source.
+
+# Contribution constraints
+
+- The [Travis-CI build](https://travis-ci.org/shlomif/PySolFC) and [AppVeyor build](https://ci.appveyor.com/project/shlomif/pysolfc) should pass on each commit.
+- Your contributions should be under [GPLv3+](https://en.wikipedia.org/wiki/GNU_General_Public_License#Version_3) or a [compatible free software licence](https://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses), but please don't put them under the [AGPL](https://en.wikipedia.org/wiki/Affero_General_Public_License), which adds additional restrictions.
+- The code should be compatible with both Python 2.7.x and Python 3.4.x-and-above.