Merge pull request #402 from mapbox/gitignore

Put everything normally generated during compilation in .gitignore

.gitignore

@@ -4,6 +4,9 @@
 *.o
 *.obj
 
+# Autogenerated dependencies
+*.d
+
 # Precompiled Headers
 *.gch
 *.pch
@@ -27,6 +30,14 @@
 *.exe
 *.out
 *.app
+tippecanoe
+tile-join
+tippecanoe-decode
+tippecanoe-enumerate
+unit
+
+# Vim
+*.swp
 
 # Mac 
-.DS_Store
+.DS_Store