diff --git a/.gitignore b/.gitignore
index 660b883..bf4cf84 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,4 +23,11 @@ tmp
 .ruby-version
 .DS_Store
 .dat*
-.rake_tasks*
\ No newline at end of file
+.rake_tasks*
+
+# IDE / editor files
+.idea/
+*.tmproj
+*.tmproject
+tmtags
+*.sublime-workspace
diff --git a/.ruby-gemset b/.ruby-gemset
deleted file mode 100644
index 90e2988..0000000
--- a/.ruby-gemset
+++ /dev/null
@@ -1 +0,0 @@
-promotion
diff --git a/.ruby-version b/.ruby-version
deleted file mode 100644
index 2aaf252..0000000
--- a/.ruby-version
+++ /dev/null
@@ -1 +0,0 @@
-ruby-1.9.3-p392