Added a .gitattributes file with rules to preserve line endings on sh…

…ell scripts

.gitattributes

@@ -0,0 +1,20 @@
+# Set the default behavior, in case people don't have core.autocrlf set.
+* text=auto
+
+# Entrypoint shell scripts should always use LF:
+/bin/dev-entrypoint.sh text eol=lf
+
+# Preserve line endings on all executable files from our rails app:
+/bin/* text eol=lf
+
+# Explicitly declare text files you want to always be normalized and converted
+# to native line endings on checkout.
+*.c text
+*.h text
+
+# Declare files that will always have CRLF line endings on checkout.
+*.sln text eol=crlf
+
+# Denote all files that are truly binary and should not be modified.
+*.png binary
+*.jpg binary