README.md: Fix MD041 warnings

The following warnings are generated by using markdownlint analysis:
```
MD041/first-line-heading/first-line-h1 First line in a file should be a top-level heading [Context: "Contains procedures that inter..."]
```
Refer to markdown-lint [1] to fix MD041
[1]: https://github.com/updownpress/markdown-lint/blob/master/rules/041-first-line-h1.md

Signed-off-by: George Liu <liuxiwei@ieisystem.com>
Change-Id: Ie4cbc4e78c3db550b5ec4e15f8baee5585e65f0b
diff --git a/README.md b/README.md
index 3bdadd3..c35a373 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+# openpower-proc-control
+
 Contains procedures that interact with the OpenPower nest chipset.
 
 ## To Build