[oe] [meta-java][PATCH 2/4] README: add note on how to send a patch series with cover-letter

[Richard Leitner]

As patch series should include a cover letter describing the whole
series shortly add a note on this in the README.

Signed-off-by: Richard Leitner <richard.leitner at skidata.com>
---
 README | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/README b/README
index 564a924..905c311 100644
--- a/README
+++ b/README
@@ -37,13 +37,18 @@ Source code:
     git://git.yoctoproject.org/meta-java
     http://git.yoctoproject.org/git/meta-java
 
-When creating patches, please use something like:
+When creating single patches, please use something like:
 
-    git format-patch -M -s --subject-prefix='meta-java][PATCH' origin
+    git format-patch -M -s --subject-prefix='meta-java][PATCH' -1
+
+When creating a patch series, please add a cover letter describing it shortly.
+Therefore use something like:
+
+    git format-patch -M -s --cover-letter --subject-prefix='meta-java][PATCH' origin
 
 When sending patches, please use something like:
 
-    git send-email --to openembedded-devel at lists.openembedded.org <generated patch>
+    git send-email --to openembedded-devel at lists.openembedded.org <generated patch(es)>
 
 Main layer maintainers:
 
-- 
2.11.0