Add misc/captura-pantalla-foros-google.md

This change also adds a custom screenshotpage.html template for that
specific page, in order to show the instruction for the appropriate OS
automatically.

Change-Id: Ifd7d2b1bda2e91f7e0a940705e23cbd7ee13612a
diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..e5dd176
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,15 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_line = true
+charset = utf-8
+
+[*.{sh,bash}]
+indent_style = space
+indent_size = 2
+switch_case_indent = true
+
+[*.{html,css,js,json}]
+indent_style = space
+indent_size = 2