Update README.md

README.md

@@ -1,3 +1,17 @@
----
-license: mit
----
+---
+license: mit
+tags:
+- chemistry
+- biology
+- aptamers
+size_categories:
+- n<1K
+---
+Columns: 
+- Aptamer Name;
+- Aptamer Sequence;
+- Reference (DOI/PUBMED ID);
+- Target Name;
+- Target Sequence;
+- External id (PDB/ATCC/PUBCHEM);
+- Original database;