Added README.md

README.md

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+# Duplicated
+**Duplicated** finds files with the same contents on your computer.
+
+Hashes all files in filter and compares to see if there are any duplicates.
+
+# Build from Source
+## Requirements
+- Minimum supported `rust`/`cargo` version: `1.78`
+
+## cargo
+`$ cargo install --git https://github.com/NMedvesky/duplicated`
+
+# Usage
+Check all files in currect directory
+`duplicated .`
+
+Check all files larger than 5 megabytes and smaller than 1 gigabyte.
+`duplicated --min_size 5M --max_size 1G`
+
+Same as previous example but another way to write it.
+`duplicated -s 5m -m 1g`