diff --git a/README.md b/README.md
index ac7b155..c31499e 100644
--- a/README.md
+++ b/README.md
@@ -352,7 +352,7 @@ Multiple distinct variant sequences and reference contexts can generate the same
 
 * [IsovarResult](https://github.com/openvax/isovar/blob/master/isovar/isovar_result.py): Since a single variant locus might have reads which assemble into multiple incompatible coding sequences, an `IsovarResult` represents a variant and one or more `ProteinSequence` objects which are associated with it. We typically don't want to deal with *every* possible translation of *every* distinct sequence detected around a variant, so the protein sequences are sorted by their number of supporting fragments and the best protein sequence is made easy to access. The `IsovarResult` object also has many informative properties such `num_alt_fragments`, `fraction_ref_reads`, &c.  
 
-
+![](isovar_design.png)
 
 ## Other Isovar Commandline Tools
 
diff --git a/isovar/protein_sequence_helpers.py b/isovar/protein_sequence_helpers.py
index c71bc2d..104370c 100644
--- a/isovar/protein_sequence_helpers.py
+++ b/isovar/protein_sequence_helpers.py
@@ -43,8 +43,7 @@ def sort_protein_sequences(protein_sequences):
 def group_equivalent_translations(translations):
     """
     Convert a list of Translation objects into a (potentially smaller) list
-    of ProteinSequence objects by grouping the
-    equivalent amino acid sequences.
+    of ProteinSequence objects by grouping the equivalent amino acid sequences.
 
     Parameters
     ----------
diff --git a/isovar/read_collector.py b/isovar/read_collector.py
index d4fec35..afb8bad 100644
--- a/isovar/read_collector.py
+++ b/isovar/read_collector.py
@@ -33,7 +33,7 @@
 
 class ReadCollector(object):
     """
-    ReadCreator holds options related to extracting reads from SAM/BAM alignment files
+    ReadCollector holds options related to extracting reads from SAM/BAM alignment files
     and provides methods for different ways to create LocusRead objects.
     """
     def __init__(
diff --git a/isovar_design.png b/isovar_design.png
new file mode 100644
index 0000000..f4ec98b
Binary files /dev/null and b/isovar_design.png differ