Upload test T1w / T2w files

These files are used to test the software. They are from https://openneuro.org/datasets/ds000113/versions/1.3.0

sub-01_ses-forrestgump_T1w.nii.gz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7c702aee386767418cc1a914fb8957c75ff2844e1d72de2c2d4b85cbac88f0cf
+size 13932380

sub-01_ses-forrestgump_T2w.nii.gz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:652248cb57ccbca27778660960b005e9206a9281811ea8480cae6fb3eb2652d2
+size 14147712