Add .gitignore to the source tree

Ignore common files during development.

Signed-off-by: Essien Ita Essien <essiene@gmail.com>
---
 .gitignore |    7 +++++++
 .hgignore  |    1 +
 2 files changed, 8 insertions(+), 0 deletions(-)
 create mode 100644 .gitignore

.gitignore

@@ -0,0 +1,7 @@
+*.beam
+rebar
+*~
+*.orig
+.*.swp
+rt.work
+.hgignore

.hgignore

@@ -4,3 +4,4 @@
 \.orig
 \.swp
 rt.work/*
+^.gitignore$