Merge pull request #366 from igorshubovych/git-blame

git-blame: add page

pages/common/git-blame.md

@@ -0,0 +1,11 @@
+# git blame
+
+> Show commit hash and last author on each line of a file
+
+- Print file with author name and commit hash on each line
+
+`git blame {{file}}`
+
+- Print file with author email and commit hash on each line
+
+`git blame -e {{file}}`