Add CHANGELOG.

CHANGELOG

+2018-08-20  Axel Schnitger  <axel.schnitger@aei.mpg.de>
+
+	* README.md, continue_gfr_par_from_iteration.m, get_input_data.sh:
+	Update the documenation and fix a wrong path.
+
+	- Add a shell script to get the example dataset.  - Update
+	documentation: How to get the example data set.  - Fix an
+	absolute path.
+
+	* commit 4222f74f75cb3979f0557fb918465b93e1b225ac
+
+2018-08-20  Axel Schnitger  <axel.schnitger@aei.mpg.de>
+
+	* .gitignore, README.md, function_gfr/readGFC.m, gfr_parallel.m:
+	Several modifications and fixes.
+
+	- Add readGFC function to be able to read gfc files with headers.
+	- Change link to the example dataset and add a description.
+	- Brush up README.md - Update ignore list.
+
+	* commit 4571d2a589b93d51670ab52a21a4ce13794328e4
+
+2018-08-10  Axel Schnitger  <axel.schnitger@aei.mpg.de>
+
+	* LICENSE: Add LICENSE
+
+	* commit 677a5ab15b391bbf5806c1fcdf3806ebb5e98396
+
+2018-08-10  Axel Schnitger  <axel.schnitger@aei.mpg.de>
+
+	* README.md: Delete an unnecessary line.
+
+	* commit ddcfdfd473194a38c75623929ca798bf27d7c96f
+
+2018-08-10  Axel Schnitger  <axel.schnitger@aei.mpg.de>
+
+	* .gitignore, README.md, continue_gfr_par_from_iteration.m,
+	function_gfr/Ri2e.m, function_gfr/Ri2e_dot.m,
+	function_gfr/batch_processor_partitioned.m,
+	function_gfr/cs2sc.m, function_gfr/cs2vec.m,
+	function_gfr/deriv.m, function_gfr/dv_geoidn.m,
+	function_gfr/dv_geoidn_no_plot.m, function_gfr/grtenpshs.m,
+	function_gfr/hmat.m, function_gfr/importGravityField.m,
+	function_gfr/initplm.m, function_gfr/inter_sat_dist.m,
+	function_gfr/llpartialgradV.m, function_gfr/multmatvek.m,
+	function_gfr/odeint.m, function_gfr/odeint_abm.m,
+	function_gfr/odeint_dp8.m, function_gfr/odeint_dp8_abm_init.m,
+	function_gfr/odeint_rk4.m, function_gfr/odeint_rk4_abm_init.m,
+	function_gfr/plm.m, function_gfr/plmsp.m, function_gfr/readACC.m,
+	function_gfr/readGNV.m, function_gfr/readKBR.m,
+	function_gfr/readSCA.m, function_gfr/sc2cs.m,
+	function_gfr/time2str.m, function_gfr/vec2cs.m, gfr_parallel.m,
+	input_data/.gitkeep, save_vars2continue_itr.m: Initial commit.
+
+	* commit 448d4b70f96d7b29563b436cd24339694f0e7932
+