Add fco, fssh (tested on OSX)

Examples-(fish).md

@@ -1,2 +1,17 @@
 Examples for fish shell
 -----------------------
+
+### Git
+
+```
+function fco -d "Fuzzy-find and checkout a branch"
+  git branch --all | grep -v HEAD | string trim | fzf | xargs git checkout
+end
+```
+
+### SSH
+```
+function fssh -d "Fuzzy-find ssh host and ssh into it"
+  ag '^host [^*]' ~/.ssh/config | cut -d ' ' -f 2 | fzf | xargs -o ssh
+end
+```