ファイル名大文字化前準備

diff --git a/ChangeLog.txt b/CHANGELOGz.txt
similarity index 100%
rename from ChangeLog.txt
rename to CHANGELOGz.txt

diff --git a/License.txt b/LICENSEz.txt
similarity index 100%
rename from License.txt
rename to LICENSEz.txt