Merge pull request #6 from bmatsuo/bmatsuo/fix-file-perms

remove the spurious executable bit from go source files
diff --git a/dce.go b/dce.go
old mode 100755
new mode 100644
diff --git a/doc.go b/doc.go
old mode 100755
new mode 100644
diff --git a/node.go b/node.go
old mode 100755
new mode 100644
diff --git a/time.go b/time.go
old mode 100755
new mode 100644