add readme with list of features

README.md

@@ -0,0 +1,13 @@
+# Features
+
+* Open text files of arbitrary size.
+* UTF-8 support
+* Filter files with regular expressions.
+* Filter matching with ignore case enabled by default.
+* Filter matches are highlighted.
+* Filter results don't disappear when changing tabs.
+* Colored highlighting of lines or matches based on regular expression.
+* Pleasing color palette.
+* Highlighters are automatically saved and restored.
+* Copy protection: Users is warned before creating a clipboard more than 5 MB in size. They can choose to copy the
+  selection into a new file instead.