Update changelog

Signed-off-by: Yoshua Wuyts <[email protected]>

Author: yoshuawuyts

CHANGELOG.md

@@ -13,3 +13,18 @@
 ```
 
 
+## 2016-03-09, Version v1.0.0
+### Commits
+- [[`b256517aef`](https://github.com/mafintosh/flat-tree-rs/commit/b256517aefb4ce2092e2920931d4c78cca6590af)] add badge (Mathias Buus)
+- [[`017436cbae`](https://github.com/mafintosh/flat-tree-rs/commit/017436cbaec00ef57b7e8311a5f674fd0cf418e4)] add desc (Mathias Buus)
+- [[`388d2445bc`](https://github.com/mafintosh/flat-tree-rs/commit/388d2445bc567148867a79f315aeee3ca492b100)] first commit (Mathias Buus)
+
+### Stats
+```diff
+ Cargo.toml   |   2 +-
+ rustfmt.toml |   2 +-
+ src/lib.rs   | 328 ++++++++++++++++++++++++++----------------------------------
+ 3 files changed, 144 insertions(+), 188 deletions(-)
+```
+
+