MAINT: adding gitattributes (#2)

Author: andyfaff

.gitattributes

@@ -0,0 +1,10 @@
+# Auto detect text files and perform LF normalization
+*.py text=auto eol=lf
+*.pyx text=auto eol=lf
+*.cpp text=auto eol=lf
+*.h text=auto eol=lf
+*.rst text=auto eol=lf
+*.txt text=auto eol=lf
+*.yml text=auto eol=lf
+*.md text=auto eol=lf
+