update according to fast default mode

README.md

@@ -30,7 +30,6 @@ Bold font indicates the best result.
 | lz4 1.9.2                | 1.75     | **0.29**          | **0.11**            |  20 619 |
 | lzop 1.04                | 1.78     | 0.36              | 0.33                |  17 123 |
 | **x**                    | 1.88     | 1.03              | 0.91                | **699** |
-| **x** (high compression) | 1.95     | 2.61              | 1.62                | **699** |
 | gzip 1.9                 | 2.74     | 4.69              | 0.63                |  48 552 |
 | zstd 1.3.7               | 2.80     | 0.55              | 0.18                | 111 948 |
 | bzip2 1.0.6              | 3.45     | 7.39              | 3.36                |   8 117 |
@@ -42,7 +41,7 @@ The algorithm
 
 The **x** uses an adaptive Golomb-Rice coding based on context modeling.
 The context model uses a single previous byte in the uncompressed stream to predict the next byte.
-The compressor can switch between fast compression mode (`-1` argument) and multi-pass high compression mode (default).
+The compressor can switch between fast compression mode (default) and multi-pass high compression mode.
 
 How to build?
 -------------

x.c

@@ -68,7 +68,7 @@ void print_help(char *path)
 {
 	fprintf(stderr, "Usage :\n\t%s [arguments] [input-file] [output-file]\n\n", path);
 	fprintf(stderr, "Arguments :\n");
-	fprintf(stderr, " -1     : compress faster\n");
+	fprintf(stderr, " -1     : compress faster (default)\n");
 	fprintf(stderr, " -9     : compress better\n");
 	fprintf(stderr, " -d     : force decompression\n");
 	fprintf(stderr, " -z     : force compression\n");